Dim Layer color parameter should only be used for qcom.

Change-Id: I7abe760df5a6660933bd1d920386823b8bfcd9a0
diff --git a/include/hardware/hwcomposer.h b/include/hardware/hwcomposer.h
index 3689993..28877e1 100644
--- a/include/hardware/hwcomposer.h
+++ b/include/hardware/hwcomposer.h
@@ -287,8 +287,10 @@
              */
             hwc_region_t surfaceDamage;
 
+#ifdef QTI_BSP
             /* Color for Dim Layer */
             hwc_color_t color;
+#endif
         };
     };