Rename debug property and expose it in HardwareRenderer

Change-Id: If46a9bc14a50f6c9a202d901881b36bbac32cba3
diff --git a/libs/hwui/Properties.h b/libs/hwui/Properties.h
index 4ee16ed..b8559bc8 100644
--- a/libs/hwui/Properties.h
+++ b/libs/hwui/Properties.h
@@ -79,7 +79,7 @@
  *
  * The default value is "hide".
  */
-#define PROPERTY_DEBUG_STENCIL_CLIP "debug.hwui.show_stencil_clip"
+#define PROPERTY_DEBUG_STENCIL_CLIP "debug.hwui.show_non_rect_clip"
 
 /**
  * Used to enable/disable scissor optimization. The accepted values are