drm/i915: fix color order for BGR formats on SNB

Had the wrong bits and field definitions.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 2288abf..a083504 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -225,16 +225,16 @@
 
 	/* Mask out pixel format bits in case we change it */
 	dvscntr &= ~DVS_PIXFORMAT_MASK;
-	dvscntr &= ~DVS_RGB_ORDER_RGBX;
+	dvscntr &= ~DVS_RGB_ORDER_XBGR;
 	dvscntr &= ~DVS_YUV_BYTE_ORDER_MASK;
 
 	switch (fb->pixel_format) {
 	case DRM_FORMAT_XBGR8888:
-		dvscntr |= DVS_FORMAT_RGBX888;
+		dvscntr |= DVS_FORMAT_RGBX888 | DVS_RGB_ORDER_XBGR;
 		pixel_size = 4;
 		break;
 	case DRM_FORMAT_XRGB8888:
-		dvscntr |= DVS_FORMAT_RGBX888 | DVS_RGB_ORDER_RGBX;
+		dvscntr |= DVS_FORMAT_RGBX888;
 		pixel_size = 4;
 		break;
 	case DRM_FORMAT_YUYV: