[Quantal SRU] [PATCH] drm/i915: Use the correct size of the GTT for placing the, per-process entries

[Chris J Arges]

BugLink: http://bugs.launchpad.net/bugs/1107642

SRU Justification:

Impact:
    When installing 32-bit images on an imac 12,1 with intel/ati
graphics, there may be crashes or blank screens.

Fix:
   bb588820ef421c6098dca1fec29c3b347f1c8c19 fixes the radeon blackout
issues; this is already in raring/quantal
   9a0f938bde74bf9e50bd75c8de9e38c1787398cd fixes the i915 issues. This
is in raring, but not in quantal.

Testcase:
    Update kernel on install iso, and try to install 32-bit ubuntu on
imac 12,1.

--chris j arges