drm: Create DEFINE_DRM_GEM_CMA_FOPS and roll it out to drivers

drm: Create DEFINE_DRM_GEM_CMA_FOPS and roll it out to drivers

Less code ftw.

This converts all drivers except the tinydrm helper module. That one
needs more work, since it gets the THIS_MODULE reference from
tinydrm.ko instead of the actual driver module like it should.
Probably needs a similar trick like I used here with generating the
entire struct with a macro.

Cc: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Reviewed-by: Liviu Dudau <Liviu.Dudau@arm.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
[rebased on 4.9, only macro no driver changes]
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>