msm: kgsl: Define all the GMU VA space

There were holes left in the GMU VA assignment space.
Fill the entire struct space out with known valid addresses.
Use this master list rather than recreating it in multiple
locations.

Change-Id: I3d801457df1fe19f4dc953af913c044df79e4172
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>