wl1251: add sdio support

This adds the wl1251_sdio module, enabling the SDIO interface for
wl1251, as used by the Google G1 phone and others.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/wl12xx/Kconfig b/drivers/net/wireless/wl12xx/Kconfig
index f8cb8b8..7b14d5b 100644
--- a/drivers/net/wireless/wl12xx/Kconfig
+++ b/drivers/net/wireless/wl12xx/Kconfig
@@ -28,6 +28,17 @@
 	  If you choose to build a module, it'll be called wl1251_spi.
 	  Say N if unsure.
 
+config WL1251_SDIO
+	tristate "TI wl1251 SDIO support"
+	depends on WL1251 && MMC
+	---help---
+	  This module adds support for the SDIO interface of adapters using
+	  TI wl1251 chipset.  Select this if your platform is using
+	  the SDIO bus.
+
+	  If you choose to build a module, it'll be called
+	  wl1251_sdio. Say N if unsure.
+
 config WL1271
 	tristate "TI wl1271 support"
 	depends on WL12XX && SPI_MASTER && GENERIC_HARDIRQS