drm/panel: Add Ronbo RB070D30 panel

The Ronbo RB070D30 panel is a MIPI-DSI panel based on a Fitipower EK79007
controller and a 1024x600 panel.

Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Konstantin Sudakov <k.sudakov@integrasources.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/3cc43c6051e89a52434053a38a36621acab7236e.1550650810.git-series.maxime.ripard@bootlin.com

drivers/gpu/drm/panel/Kconfig

@@ -149,6 +149,15 @@ config DRM_PANEL_RAYDIUM_RM68200
 	  Say Y here if you want to enable support for Raydium RM68200
 	  720x1280 DSI video mode panel.
 
+config DRM_PANEL_RONBO_RB070D30
+	tristate "Ronbo Electronics RB070D30 panel"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y here if you want to enable support for Ronbo Electronics
+	  RB070D30 1024x600 DSI panel.
+
 config DRM_PANEL_SAMSUNG_S6D16D0
 	tristate "Samsung S6D16D0 DSI video mode panel"
 	depends on OF