Fix format string mismatch. Clang build fix.
Fix format string mismatch. Clang build fix.

The gralloc usage flags are an enum, which is backed by an
implementation defined type. Both gcc and clang are making this a long
long. All the values are hard coded to fit within 8 hex characters
though, so just make the cast.

Change-Id: I4a9778a24c2cbf7fb663371d208e30c4921e170d

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base