media: rc: gpio-ir-tx does not work without devicetree or gpiolib

If the kernel is built without device tree, this driver cannot be
used and without gpiolib it cannot control any gpio pin.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/rc/Kconfig

@@ -403,6 +403,7 @@ config IR_GPIO_TX
 	tristate "GPIO IR Bit Banging Transmitter"
 	depends on RC_CORE
 	depends on LIRC
+	depends on (OF && GPIOLIB) || COMPILE_TEST
 	---help---
 	   Say Y if you want to a GPIO based IR transmitter. This is a
 	   bit banging driver.