multi_v7_defconfig: make Rockchip DRM drivers built-in

These cause warnings in linux-next, as the symbols have become 'bool' there:

arch/arm/configs/multi_v7_defconfig:600:warning: symbol value 'm' invalid for ROCKCHIP_INNO_HDMI
arch/arm/configs/multi_v7_defconfig:599:warning: symbol value 'm' invalid for ROCKCHIP_DW_MIPI_DSI
arch/arm/configs/multi_v7_defconfig:598:warning: symbol value 'm' invalid for ROCKCHIP_DW_HDMI
arch/arm/configs/multi_v7_defconfig:597:warning: symbol value 'm' invalid for ROCKCHIP_ANALOGIX_DP
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/configs/multi_v7_defconfig

@@ -593,10 +593,10 @@ CONFIG_DRM_EXYNOS_DPI=y
 CONFIG_DRM_EXYNOS_DSI=y
 CONFIG_DRM_EXYNOS_HDMI=y
 CONFIG_DRM_ROCKCHIP=m
-CONFIG_ROCKCHIP_ANALOGIX_DP=m
-CONFIG_ROCKCHIP_DW_HDMI=m
-CONFIG_ROCKCHIP_DW_MIPI_DSI=m
-CONFIG_ROCKCHIP_INNO_HDMI=m
+CONFIG_ROCKCHIP_ANALOGIX_DP=y
+CONFIG_ROCKCHIP_DW_HDMI=y
+CONFIG_ROCKCHIP_DW_MIPI_DSI=y
+CONFIG_ROCKCHIP_INNO_HDMI=y
 CONFIG_DRM_ATMEL_HLCDC=m
 CONFIG_DRM_RCAR_DU=m
 CONFIG_DRM_RCAR_HDMI=y