Create forceHwcCopyForVirtualDisplay in configStore

Change-Id: I69ff735a0263cb19d8208867943329357be49d4a
diff --git a/configstore/1.0/default/surfaceflinger.mk b/configstore/1.0/default/surfaceflinger.mk
index d824072..c28524b 100644
--- a/configstore/1.0/default/surfaceflinger.mk
+++ b/configstore/1.0/default/surfaceflinger.mk
@@ -34,3 +34,7 @@
 else
     LOCAL_CFLAGS += -DPRESENT_TIME_OFFSET_FROM_VSYNC_NS=0
 endif
+
+ifeq ($(TARGET_FORCE_HWC_FOR_VIRTUAL_DISPLAYS),true)
+    LOCAL_CFLAGS += -DFORCE_HWC_COPY_FOR_VIRTUAL_DISPLAYS
+endif