staging: csr: remove unneeded PCI dependency

Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/csr/Kconfig

 config CSR_WIFI
 	tristate "CSR wireless driver"
-	depends on PCI && MMC && CFG80211_WEXT
+	depends on MMC && CFG80211_WEXT
 	select WIRELESS_EXT
 	select WEXT_PRIV
 	help