rt2x00: Deprecate max_sta_intf field of struct rt2x00_ops.

All drivers set this value to 1, so there is no need (currently) to let
drivers set this.
Therefor, remove the field; we can always add it back when it is needed.

Inspired by an earlier patch from Paul Fertser.
Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Cc: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2400pci.c

@@ -1789,7 +1789,6 @@ static const struct data_queue_desc rt2400pci_queue_atim = {
 
 static const struct rt2x00_ops rt2400pci_ops = {
 	.name			= KBUILD_MODNAME,
-	.max_sta_intf		= 1,
 	.max_ap_intf		= 1,
 	.eeprom_size		= EEPROM_SIZE,
 	.rf_size		= RF_SIZE,

drivers/net/wireless/rt2x00/rt2500pci.c

@@ -2081,7 +2081,6 @@ static const struct data_queue_desc rt2500pci_queue_atim = {
 
 static const struct rt2x00_ops rt2500pci_ops = {
 	.name			= KBUILD_MODNAME,
-	.max_sta_intf		= 1,
 	.max_ap_intf		= 1,
 	.eeprom_size		= EEPROM_SIZE,
 	.rf_size		= RF_SIZE,

drivers/net/wireless/rt2x00/rt2500usb.c

@@ -1896,7 +1896,6 @@ static const struct data_queue_desc rt2500usb_queue_atim = {
 
 static const struct rt2x00_ops rt2500usb_ops = {
 	.name			= KBUILD_MODNAME,
-	.max_sta_intf		= 1,
 	.max_ap_intf		= 1,
 	.eeprom_size		= EEPROM_SIZE,
 	.rf_size		= RF_SIZE,

drivers/net/wireless/rt2x00/rt2800pci.c

@@ -1088,7 +1088,6 @@ static const struct data_queue_desc rt2800pci_queue_bcn = {
 static const struct rt2x00_ops rt2800pci_ops = {
 	.name			= KBUILD_MODNAME,
 	.drv_data_size		= sizeof(struct rt2800_drv_data),
-	.max_sta_intf		= 1,
 	.max_ap_intf		= 8,
 	.eeprom_size		= EEPROM_SIZE,
 	.rf_size		= RF_SIZE,

drivers/net/wireless/rt2x00/rt2800usb.c

@@ -870,7 +870,6 @@ static const struct data_queue_desc rt2800usb_queue_bcn = {
 static const struct rt2x00_ops rt2800usb_ops = {
 	.name			= KBUILD_MODNAME,
 	.drv_data_size		= sizeof(struct rt2800_drv_data),
-	.max_sta_intf		= 1,
 	.max_ap_intf		= 8,
 	.eeprom_size		= EEPROM_SIZE,
 	.rf_size		= RF_SIZE,

drivers/net/wireless/rt2x00/rt2x00.h

@@ -656,7 +656,6 @@ struct rt2x00lib_ops {
 struct rt2x00_ops {
 	const char *name;
 	const unsigned int drv_data_size;
-	const unsigned int max_sta_intf;
 	const unsigned int max_ap_intf;
 	const unsigned int eeprom_size;
 	const unsigned int rf_size;

drivers/net/wireless/rt2x00/rt2x00mac.c

@@ -243,10 +243,9 @@ int rt2x00mac_add_interface(struct ieee80211_hw *hw,
 			return -ENOBUFS;
 
 		/*
-		 * Check if we exceeded the maximum amount
-		 * of supported interfaces.
+		 * We don't support multiple STA interfaces.
 		 */
-		if (rt2x00dev->intf_sta_count >= rt2x00dev->ops->max_sta_intf)
+		if (rt2x00dev->intf_sta_count)
 			return -ENOBUFS;
 
 		break;

drivers/net/wireless/rt2x00/rt61pci.c

@@ -3045,7 +3045,6 @@ static const struct data_queue_desc rt61pci_queue_bcn = {
 
 static const struct rt2x00_ops rt61pci_ops = {
 	.name			= KBUILD_MODNAME,
-	.max_sta_intf		= 1,
 	.max_ap_intf		= 4,
 	.eeprom_size		= EEPROM_SIZE,
 	.rf_size		= RF_SIZE,

drivers/net/wireless/rt2x00/rt73usb.c

@@ -2382,7 +2382,6 @@ static const struct data_queue_desc rt73usb_queue_bcn = {
 
 static const struct rt2x00_ops rt73usb_ops = {
 	.name			= KBUILD_MODNAME,
-	.max_sta_intf		= 1,
 	.max_ap_intf		= 4,
 	.eeprom_size		= EEPROM_SIZE,
 	.rf_size		= RF_SIZE,