drm/msm: small fence cleanup
authorRob Clark <robdclark@gmail.com>
Fri, 7 Nov 2014 23:10:04 +0000 (18:10 -0500)
committerRob Clark <robdclark@gmail.com>
Sun, 16 Nov 2014 19:27:35 +0000 (14:27 -0500)
Give ourselves a way to wait for certain fence #..  makes it easier to
wait on a set of bo's, which we'll need for atomic.

Signed-off-by: Rob Clark <robdclark@gmail.com>

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