Documentation: igbvf: Prepare documentation for RST conversion

Before making the conversion to the RST (reStructured Text) format, there
are changes needed to the documentation so that there are no build errors.

Also fixed old/broken URLs to the correct or updated URL.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>

Documentation/networking/igbvf.txt

-Linux* Base Driver for Intel(R) Ethernet Network Connection
-===========================================================
+.. SPDX-License-Identifier: GPL-2.0+
 
-Intel Gigabit Linux driver.
-Copyright(c) 1999 - 2013 Intel Corporation.
+Linux* Base Virtual Function Driver for Intel(R) 1G Ethernet
+============================================================
+
+Intel Gigabit Virtual Function Linux driver.
+Copyright(c) 1999-2018 Intel Corporation.
 
 Contents
 ========
-
 - Identifying Your Adapter
 - Additional Configurations
 - Support
 
-This file describes the igbvf Linux* Base Driver for Intel Network Connection.
+This driver supports Intel 82576-based virtual function devices-based virtual
+function devices that can only be activated on kernels that support SR-IOV.
 
-The igbvf driver supports 82576-based virtual function devices that can only
-be activated on kernels that support SR-IOV. SR-IOV requires the correct
-platform and OS support.
+SR-IOV requires the correct platform and OS support.
 
-The igbvf driver requires the igb driver, version 2.0 or later. The igbvf
-driver supports virtual functions generated by the igb driver with a max_vfs
-value of 1 or greater. For more information on the max_vfs parameter refer
-to the README included with the igb driver.
+The guest OS loading this driver must support MSI-X interrupts.
 
-The guest OS loading the igbvf driver must support MSI-X interrupts.
+For questions related to hardware requirements, refer to the documentation
+supplied with your Intel adapter. All hardware requirements listed apply to use
+with Linux.
 
-This driver is only supported as a loadable module at this time.  Intel is
-not supplying patches against the kernel source to allow for static linking
-of the driver.  For questions related to hardware requirements, refer to the
-documentation supplied with your Intel Gigabit adapter.  All hardware
-requirements listed apply to use with Linux.
+Driver information can be obtained using ethtool, lspci, and ifconfig.
+Instructions on updating ethtool can be found in the section Additional
+Configurations later in this document.
 
-Instructions on updating ethtool can be found in the section "Additional
-Configurations" later in this document.
+NOTE: There is a limit of a total of 32 shared VLANs to 1 or more VFs.
 
-VLANs: There is a limit of a total of 32 shared VLANs to 1 or more VFs.
 
 Identifying Your Adapter
 ========================
+For information on how to identify your adapter, and for the latest Intel
+network drivers, refer to the Intel Support website:
+http://www.intel.com/support
 
-The igbvf driver supports 82576-based virtual function devices that can only
-be activated on kernels that support SR-IOV.
-
-For more information on how to identify your adapter, go to the Adapter &
-Driver ID Guide at:
 
-    http://support.intel.com/support/go/network/adapter/idguide.htm
+Additional Features and Configurations
+======================================
 
-For the latest Intel network drivers for Linux, refer to the following
-website.  In the search field, enter your adapter name or type, or use the
-networking link on the left to search for your adapter:
+ethtool
+-------
+The driver utilizes the ethtool interface for driver configuration and
+diagnostics, as well as displaying statistical information. The latest ethtool
+version is required for this functionality. Download it at:
 
-    http://downloadcenter.intel.com/scripts-df-external/Support_Intel.aspx
+https://www.kernel.org/pub/software/network/ethtool/
 
-Additional Configurations
-=========================
-
-  ethtool
-  -------
-  The driver utilizes the ethtool interface for driver configuration and
-  diagnostics, as well as displaying statistical information.  The ethtool
-  version 3.0 or later is required for this functionality, although we
-  strongly recommend downloading the latest version at:
-
-  https://www.kernel.org/pub/software/network/ethtool/
 
 Support
 =======
-
 For general information, go to the Intel support website at:
 
-    http://support.intel.com
+https://www.intel.com/support/
 
 or the Intel Wired Networking project hosted by Sourceforge at:
 
-    http://sourceforge.net/projects/e1000
+https://sourceforge.net/projects/e1000
 
-If an issue is identified with the released source code on the supported
-kernel with a supported adapter, email the specific information related
-to the issue to e1000-devel@lists.sf.net
+If an issue is identified with the released source code on a supported kernel
+with a supported adapter, email the specific information related to the issue
+to e1000-devel@lists.sf.net.