drm/bridge: sil_sii8620: do not have a dependency of RC_CORE

This patch makes RC_CORE to be selected with this driver.

sil_sii8620 driver calls remote controller interfaces directly
so RC_CORE should be enabled mandatorily.

And some boards not using remote controller device don't really
need to know that RC_CORE config should be enabled to use sil_sii8620
driver only for HDMI.

Changelog v2:
- select INPUT because compiling will fail without INPUT.
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Signed-off-by: NAndrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1527154379-31886-1-git-send-email-inki.dae@samsung.com

drivers/gpu/drm/bridge/Kconfig

@@ -82,8 +82,10 @@ config DRM_PARADE_PS8622
 
 config DRM_SIL_SII8620
 	tristate "Silicon Image SII8620 HDMI/MHL bridge"
-	depends on OF && RC_CORE
+	depends on OF
 	select DRM_KMS_HELPER
+	select INPUT
+	select RC_CORE
 	help
 	  Silicon Image SII8620 HDMI/MHL bridge chip driver.