drm/vc4: For DPI, MEDIA_BUS_FMT_RGB565_1X16 is mode 1, not 3.

The mapping is incorrect for RGB565_1X16 as it should be
DPI_FORMAT_18BIT_666_RGB_1 instead of DPI_FORMAT_18BIT_666_RGB_3.

Signed-off-by: Dave Stevenson <[email protected]>

Author: 6by9

drivers/gpu/drm/vc4/vc4_dpi.c

@@ -188,7 +188,7 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
 						       DPI_ORDER);
 				break;
 			case MEDIA_BUS_FMT_RGB565_1X16:
-				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3,
+				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_1,
 						       DPI_FORMAT);
 				break;
 			case MEDIA_BUS_FMT_RGB565_1X24_CPADHI: