drm/i915: mask tiled bit when updating ILK sprites

Or going from tiled to untiled may break.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 1a1483b..cc8df4d 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -234,6 +234,7 @@
 	dvscntr &= ~DVS_PIXFORMAT_MASK;
 	dvscntr &= ~DVS_RGB_ORDER_XBGR;
 	dvscntr &= ~DVS_YUV_BYTE_ORDER_MASK;
+	dvscntr &= ~DVS_TILED;
 
 	switch (fb->pixel_format) {
 	case DRM_FORMAT_XBGR8888: