Private API to support MFF transition.

Change-Id: I17cc9dc46eb37e4397428ba64305b0fd8ed3ae81
diff --git a/libs/rs/rsAllocation.h b/libs/rs/rsAllocation.h
index 4ce863a..0f7ed42 100644
--- a/libs/rs/rsAllocation.h
+++ b/libs/rs/rsAllocation.h
@@ -55,6 +55,8 @@
             bool hasMipmaps;
             bool hasFaces;
             bool hasReferences;
+
+            void * usrPtr;
         };
         State state;
 
@@ -66,7 +68,8 @@
     Hal mHal;
 
     static Allocation * createAllocation(Context *rsc, const Type *, uint32_t usages,
-                                  RsAllocationMipmapControl mc = RS_ALLOCATION_MIPMAP_NONE);
+                                         RsAllocationMipmapControl mc = RS_ALLOCATION_MIPMAP_NONE,
+                                         void *ptr = 0);
     virtual ~Allocation();
     void updateCache();
 
@@ -134,7 +137,7 @@
 
 private:
     void freeChildrenUnlocked();
-    Allocation(Context *rsc, const Type *, uint32_t usages, RsAllocationMipmapControl mc);
+    Allocation(Context *rsc, const Type *, uint32_t usages, RsAllocationMipmapControl mc, void *ptr);
 
     uint32_t getPackedSize() const;
     static void writePackedData(const Type *type, uint8_t *dst, const uint8_t *src, bool dstPadded);