libgrallocutils: Support defaults in AdrenoMemInfo

Support defaults in AdrenoMemInfo for cases where libadreno_utils.so
is unavailable.

Change-Id: I0e671f15ec4671488cdeb421f662efa66bc25738
CRs-fixed: 2082006
diff --git a/libgralloc1/gr_adreno_info.h b/libgralloc1/gr_adreno_info.h
index 75ba507..b19256a 100644
--- a/libgralloc1/gr_adreno_info.h
+++ b/libgralloc1/gr_adreno_info.h
@@ -71,8 +71,6 @@
 
 class AdrenoMemInfo {
  public:
-  bool Init();
-
   /*
    * Function to compute aligned width and aligned height based on
    * width, height, format and usage flags.
@@ -123,6 +121,7 @@
   static AdrenoMemInfo *GetInstance();
 
  private:
+  AdrenoMemInfo();
   ~AdrenoMemInfo();
   // link(s)to adreno surface padding library.
   int (*LINK_adreno_compute_padding)(int width, int bpp, int surface_tile_height,