drm/gem: add shmem get/put page helpers
Basically just extracting some code duplicated in gma500, omapdrm, udl,
and upcoming msm driver.
Signed-off-by:
Rob Clark <robdclark@gmail.com>
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Basically just extracting some code duplicated in gma500, omapdrm, udl,
and upcoming msm driver.
Signed-off-by:
Rob Clark <robdclark@gmail.com>