iommu/msm: Make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/iommu/Kconfig:config MSM_IOMMU
drivers/iommu/Kconfig:  bool "MSM IOMMU Support"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init was not even used by this driver, the init ordering
remains unchanged with this commit.

We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.

Cc: Joerg Roedel <joro@8bytes.org>
Cc: Stepan Moskovchenko <stepanm@codeaurora.org>
Cc: iommu@lists.linux-foundation.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

drivers/iommu/msm_iommu.c

 /* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
+ *
+ * Author: Stepan Moskovchenko <stepanm@codeaurora.org>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -17,7 +19,7 @@
 
 #define pr_fmt(fmt)	KBUILD_MODNAME ": " fmt
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/errno.h>
 #include <linux/io.h>
@@ -861,14 +863,5 @@ static int __init msm_iommu_driver_init(void)
 
 	return ret;
 }
-
-static void __exit msm_iommu_driver_exit(void)
-{
-	platform_driver_unregister(&msm_iommu_driver);
-}
-
 subsys_initcall(msm_iommu_driver_init);
-module_exit(msm_iommu_driver_exit);
 
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Stepan Moskovchenko <stepanm@codeaurora.org>");