ARM: davinci_all_defconfig: enable dumb vga-dac drm bridge

This enables the dumb-vga-dac driver by default for davinci boards.

The driver is needed for tilcdc support on da850-lcdk board.
Signed-off-by: NBartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: NSekhar Nori <nsekhar@ti.com>

arch/arm/configs/davinci_all_defconfig

@@ -134,6 +134,7 @@ CONFIG_VIDEO_DAVINCI_VPIF_CAPTURE=m
 CONFIG_VIDEO_TVP514X=m
 CONFIG_DRM=m
 CONFIG_DRM_TILCDC=m
+CONFIG_DRM_DUMB_VGA_DAC=m
 CONFIG_FB=y
 CONFIG_FIRMWARE_EDID=y
 CONFIG_FB_DA8XX=y