Fix compile warnings

Use __attribute__((unused)) to eliminate warnings about unused
paremeters.

Test: mmm device/generic/goldfish-opengl, presubmit check.

Change-Id: Ic12cb4b80b06ec6f6de8ed965c30d90f9df0a2fe
Signed-off-by: Dongzhihai <dongzhihai@eswincomputing.com>
1 file changed