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>
diff --git a/drivers/net/wireless/wl12xx/Makefile b/drivers/net/wireless/wl12xx/Makefile
new file mode 100644
index 0000000..d43de27
--- /dev/null
+++ b/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