media: rc: pwm-ir-tx needs OF

Without device tree, there is no way to use this driver.

Signed-off-by: Sean Young <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
diff --git a/drivers/media/rc/Kconfig b/drivers/media/rc/Kconfig
index 946d2ec..88c8ecd1 100644
--- a/drivers/media/rc/Kconfig
+++ b/drivers/media/rc/Kconfig
@@ -416,6 +416,7 @@
 	depends on RC_CORE
 	depends on LIRC
 	depends on PWM
+	depends on OF || COMPILE_TEST
 	---help---
 	   Say Y if you want to use a PWM based IR transmitter. This is
 	   more power efficient than the bit banging gpio driver.