at76c50x-usb: add driver

This is a driver for usb devices based on at76c50x chipset. This is
a mac80211 port of the original at76_usb driver.
Signed-off-by: Kalle Valo <kalle.valo@iki.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/Kconfig

@@ -228,6 +228,14 @@ config PCMCIA_ATMEL
 	  Enable support for PCMCIA cards containing the
 	  Atmel at76c502 and at76c504 chips.
 
+config AT76C50X_USB
+        tristate "Atmel at76c503/at76c505/at76c505a USB cards"
+        depends on MAC80211 && WLAN_80211 && USB
+        select FW_LOADER
+        ---help---
+          Enable support for USB Wireless devices using Atmel at76c503,
+          at76c505 or at76c505a chips.
+
 config AIRO_CS
 	tristate "Cisco/Aironet 34X/35X/4500/4800 PCMCIA cards"
 	depends on PCMCIA && (BROKEN || !M32R) && WLAN_80211

drivers/net/wireless/Makefile

@@ -24,6 +24,8 @@ obj-$(CONFIG_ATMEL)             += atmel.o
 obj-$(CONFIG_PCI_ATMEL)         += atmel_pci.o 
 obj-$(CONFIG_PCMCIA_ATMEL)      += atmel_cs.o
 
+obj-$(CONFIG_AT76C50X_USB)      += at76c50x-usb.o
+
 obj-$(CONFIG_PRISM54)		+= prism54/
 
 obj-$(CONFIG_HOSTAP)		+= hostap/