kgsl: update to latest ics_chocolate revision

Latest as of commit: c19588a1dcc60eb10b661ea0edd1e5b26e797b18

Completely untouched - build fixes for 2.6.35 kernel will be in
separate commit.

Change-Id: I1b925e82b3124206d74e7589336db341b66be652
(cherry picked from commit 2f3d191b4d0b916364a99c71bc81e5238b2cf589)