[PATCH v2] staging: wfx: fix an undefined reference error when CONFIG_MMC=m

[zhong jiang]

drivers/staging/wfx/main.o: In function `wfx_core_init':
/home/z00352263/linux-next/linux-next/drivers/staging/wfx/main.c:488: undefined reference to `sdio_register_driver'
drivers/staging/wfx/main.o: In function `wfx_core_exit':
/home/z00352263/linux-next/linux-next/drivers/staging/wfx/main.c:496: undefined reference to `sdio_unregister_driver'
drivers/staging/wfx/main.o:(.debug_addr+0x1a8): undefined reference to `sdio_register_driver'
drivers/staging/wfx/main.o:(.debug_addr+0x6f0): undefined reference to `sdio_unregister_driver'

Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx>
---
 drivers/staging/wfx/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/wfx/Kconfig b/drivers/staging/wfx/Kconfig
index 9b8a1c7..2d73722 100644
--- a/drivers/staging/wfx/Kconfig
+++ b/drivers/staging/wfx/Kconfig
@@ -1,7 +1,7 @@
 config WFX
 	tristate "Silicon Labs wireless chips WF200 and further"
 	depends on MAC80211
-	depends on (SPI || MMC)
+	depends on (SPI && MMC)
 	help
 	  This is a driver for Silicons Labs WFxxx series (WF200 and further)
 	  chipsets. This chip can be found on SPI or SDIO buses.
-- 
1.7.12.4