drm/i915: Release fenced GTT mapping on suspend

... so that upon first use after resume we will reacquire the fence reg.

Reported-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2010-11-27 17:38:29 +00:00
commit 7d2cb39c33