Staging: W35UND should depend on USB

W35UND should depend on USB
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/winbond/Kconfig

 config W35UND
 	tristate "Winbond driver"
-	depends on MAC80211 && WLAN_80211 && EXPERIMENTAL && !4KSTACKS
+	depends on MAC80211 && WLAN_80211 && USB && EXPERIMENTAL && !4KSTACKS
 	default n
 	---help---
 	  This is highly experimental driver for winbond wifi card on some Kohjinsha notebooks