hwc/overlay: Set MDP_SOLID_FILL flag for Color layer.

Set MDP_SOLID_FILL flag while configuring MDP pipe for Color layer.

Change-Id: Ia48e6e3e759ae026510544cad8a6c1a6256d82e7
diff --git a/libhwcomposer/hwc_utils.cpp b/libhwcomposer/hwc_utils.cpp
index f2ab7e6..ff21659 100644
--- a/libhwcomposer/hwc_utils.cpp
+++ b/libhwcomposer/hwc_utils.cpp
@@ -1403,6 +1403,7 @@
     uint32_t color = layer->transform;
     Whf whf(w, h, getMdpFormat(HAL_PIXEL_FORMAT_RGBA_8888), 0);
 
+    ovutils::setMdpFlags(mdpFlags, ovutils::OV_MDP_SOLID_FILL);
     if (layer->blending == HWC_BLENDING_PREMULT)
         ovutils::setMdpFlags(mdpFlags, ovutils::OV_MDP_BLEND_FG_PREMULT);