[media] media: Fix randconfig error

Fix randconfig error when USB is not enabled:
ERROR: "usb_control_msg" [drivers/media/common/cypress_firmware.ko] undefined!
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Reviewed-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/common/Kconfig

@@ -18,6 +18,7 @@ config VIDEO_TVEEPROM
 
 config CYPRESS_FIRMWARE
 	tristate "Cypress firmware helper routines"
+	depends on USB
 
 source "drivers/media/common/b2c2/Kconfig"
 source "drivers/media/common/saa7146/Kconfig"