V4L/DVB: pwc Kconfig dependency fix

makes USB_PWC_INPUT_EVDEV to depend also on USB_PWC
Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/pwc/Kconfig

@@ -39,7 +39,7 @@ config USB_PWC_DEBUG
 config USB_PWC_INPUT_EVDEV
 	bool "USB Philips Cameras input events device support"
 	default y
-	depends on USB_PWC=INPUT || INPUT=y
+	depends on USB_PWC && (USB_PWC=INPUT || INPUT=y)
 	---help---
 	  This option makes USB Philips cameras register the snapshot button as
 	  an input device to report button events.