gpu: ipu-v3: add support for ARGB4444 16-bit color format

This patch adds support for the ARGB4444 color format.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

drivers/gpu/ipu-v3/ipu-common.c

@@ -65,6 +65,7 @@ enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc)
 	case DRM_FORMAT_BGR565:
 	case DRM_FORMAT_RGB888:
 	case DRM_FORMAT_BGR888:
+	case DRM_FORMAT_ARGB4444:
 	case DRM_FORMAT_XRGB8888:
 	case DRM_FORMAT_XBGR8888:
 	case DRM_FORMAT_RGBX8888: