staging: vt6656: mac80211 conversion: main_usb add functions and change usb_driver functions

Create new functions for the operations of mac80211
vnt_tx_80211
vnt_start
vnt_stop
vnt_add_interface
vnt_remove_interface
vnt_config
vnt_bss_info_changed
vnt_prepare_multicast
vnt_configure
vnt_set_key
vnt_sw_scan_start
vnt_sw_scan_complete
vnt_get_tsf
vnt_set_tsf
vnt_reset_tsf

Create vnt_init to call device_init_registers to get permanent mac address.
This will be linked to vt6656_probe via bScheduleCommand in another patch as
firmware needs to be loaded first.

Modify vt6656_probe, vt6656_disconnect for mac80211

Change vt6656_suspend and vt6656_resume, nothing needs to be done here
let mac80211 handle the suspend.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6656/device.h

@@ -396,6 +396,7 @@ typedef struct __device_opt {
 struct vnt_private {
 	/* mac80211 */
 	struct ieee80211_hw *hw;
+	struct ieee80211_vif *vif;
 	/* netdev */
 	struct usb_device *usb;
 	struct net_device *dev;
@@ -410,6 +411,7 @@ struct vnt_private {
 	u8 rx_rate;
 
 	u32 rx_buf_sz;
+	int mc_list_count;
 	int multicast_limit;
 	u8 byRxMode;
 
@@ -574,6 +576,7 @@ struct vnt_private {
 	int bRadioOff;
 
 	/* Power save */
+	u16 current_aid;
 	int bEnablePSMode;
 	u16 wListenInterval;
 	int bPWBitOn;