hwc: Punt layers with non integral source crop

The MDP driver cannot handle such layers right now. Investigate
doing this with pixel phase in the future.

Change-Id: Iabbdd0285234160770ae5a799b07a5b912e5fde3
(cherry picked from commit e6aff6414ba478312d9d4af21ab63d586594009f)
diff --git a/libhwcomposer/hwc_mdpcomp.cpp b/libhwcomposer/hwc_mdpcomp.cpp
index ebfa22e..ef77567 100644
--- a/libhwcomposer/hwc_mdpcomp.cpp
+++ b/libhwcomposer/hwc_mdpcomp.cpp
@@ -292,6 +292,10 @@
         return false;
     }
 
+    //XXX: Investigate doing this with pixel phase on MDSS
+    if(isNonIntegralSourceCrop(layer->sourceCropf))
+        return false;
+
     int hw_w = ctx->dpyAttr[mDpy].xres;
     int hw_h = ctx->dpyAttr[mDpy].yres;