wl12xx: add driver

wl12xx is a driver for TI wl1251 802.11 chipset designed for embedded
devices, supporting both SDIO and SPI busses. Currently the driver
supports only SPI. Adding support 1253 (the 5 GHz version) should be
relatively easy. More information here:

http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?contentId=4711&navigationId=12494&templateId=6123

(Collapsed original sequence of pre-merge patches into single commit for
initial merge. -- JWL)

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/Kconfig

@@ -500,5 +500,6 @@ source "drivers/net/wireless/b43legacy/Kconfig"
 source "drivers/net/wireless/zd1211rw/Kconfig"
 source "drivers/net/wireless/rt2x00/Kconfig"
 source "drivers/net/wireless/orinoco/Kconfig"
+source "drivers/net/wireless/wl12xx/Kconfig"
 
 endmenu

drivers/net/wireless/Makefile

@@ -58,3 +58,5 @@ obj-$(CONFIG_P54_COMMON)	+= p54/
 obj-$(CONFIG_ATH_COMMON)	+= ath/
 
 obj-$(CONFIG_MAC80211_HWSIM)	+= mac80211_hwsim.o
+
+obj-$(CONFIG_WL12XX)	+= wl12xx/

drivers/net/wireless/wl12xx/Kconfig

@@ -0,0 +1,11 @@
+config WL12XX
+	tristate "TI wl1251/wl1271 support"
+	depends on MAC80211 && WLAN_80211 && SPI_MASTER && EXPERIMENTAL
+	select FW_LOADER
+	select CRC7
+	---help---
+	  This module adds support for wireless adapters based on
+	  TI wl1251/wl1271 chipsets.
+
+	  If you choose to build a module, it'll be called wl12xx. Say N if
+	  unsure.

drivers/net/wireless/wl12xx/Makefile

@@ -0,0 +1,4 @@
+wl12xx-objs		= main.o spi.o event.o tx.o rx.o \
+			  ps.o cmd.o acx.o boot.o init.o wl1251.o \
+			  debugfs.o
+obj-$(CONFIG_WL12XX)	+= wl12xx.o