Don't update 9patches on every frame.

Change-Id: I7ffb2365f83e0453e7d0a0cdcb3fc9308b305238
diff --git a/libs/hwui/Properties.h b/libs/hwui/Properties.h
index 277aacc..2c1a82b 100644
--- a/libs/hwui/Properties.h
+++ b/libs/hwui/Properties.h
@@ -47,7 +47,7 @@
 #define DEFAULT_TEXTURE_CACHE_SIZE 22.0f
 #define DEFAULT_LAYER_CACHE_SIZE 4.0f
 #define DEFAULT_PATH_CACHE_SIZE 4.0f
-#define DEFAULT_PATCH_CACHE_SIZE 100
+#define DEFAULT_PATCH_CACHE_SIZE 512
 #define DEFAULT_GRADIENT_CACHE_SIZE 0.5f
 #define DEFAULT_DROP_SHADOW_CACHE_SIZE 2.0f
 #define DEFAULT_FBO_CACHE_SIZE 25