Added MAX_TEXTURE_UNITS in getInteger method of libGL

Change-Id: I0c0d5432a2f83153c61db4e7f80b5ba059fa2758
Reviewed-on: https://swiftshader-review.googlesource.com/3725
Reviewed-by: Maxime Grégoire <mgregoire@google.com>
Tested-by: Maxime Grégoire <mgregoire@google.com>
1 file changed