gralloc: Remove opaque types

Remove opaque types like size_t, uintptr_t, intptr_t to support
32bit and 64bit processes together.

When a 64bit process creates a handle and a 32bit process validates
the incoming ints against expected ints, opaque types lead to
different and mismatching values.

Always use unit64_t for base address for 32bit and 64bit SF.
Use unsigned int for offset and size, since ION uses that.

Change-Id: I7db5544556a8924f98010b965f837592e9f0b4ca
diff --git a/libgralloc/ionalloc.h b/libgralloc/ionalloc.h
index 683c9af..635bda5 100644
--- a/libgralloc/ionalloc.h
+++ b/libgralloc/ionalloc.h
@@ -41,17 +41,17 @@
     public:
     virtual int alloc_buffer(alloc_data& data);
 
-    virtual int free_buffer(void *base, size_t size,
-                            size_t offset, int fd);
+    virtual int free_buffer(void *base, unsigned int size,
+                            unsigned int offset, int fd);
 
-    virtual int map_buffer(void **pBase, size_t size,
-                           size_t offset, int fd);
+    virtual int map_buffer(void **pBase, unsigned int size,
+                           unsigned int offset, int fd);
 
-    virtual int unmap_buffer(void *base, size_t size,
-                             size_t offset);
+    virtual int unmap_buffer(void *base, unsigned int size,
+                             unsigned int offset);
 
-    virtual int clean_buffer(void*base, size_t size,
-                             size_t offset, int fd, int op);
+    virtual int clean_buffer(void*base, unsigned int size,
+                             unsigned int offset, int fd, int op);
 
     IonAlloc() { mIonFd = FD_INIT; }