arm64: defconfig: Enable ROCKCHIP_LVDS

Now, some of the rockchip hardware platforms do enable
lvds in mainline tree.

So, enable Rockchip LVDS driver via default defconfig.
Signed-off-by: NJagan Teki <jagan@amarulasolutions.com>
Link: https://lore.kernel.org/r/20201109181017.206834-8-jagan@amarulasolutions.comSigned-off-by: NHeiko Stuebner <heiko@sntech.de>

arch/arm64/configs/defconfig

@@ -645,6 +645,7 @@ CONFIG_ROCKCHIP_CDN_DP=y
 CONFIG_ROCKCHIP_DW_HDMI=y
 CONFIG_ROCKCHIP_DW_MIPI_DSI=y
 CONFIG_ROCKCHIP_INNO_HDMI=y
+CONFIG_ROCKCHIP_LVDS=y
 CONFIG_DRM_RCAR_DU=m
 CONFIG_DRM_RCAR_DW_HDMI=m
 CONFIG_DRM_SUN4I=m