UPSTREAM: drm: add plane properties

UPSTREAM: drm: add plane properties

The omapdrm driver uses this for setting per-overlay rotation.  It
is likely also useful for setting YUV->RGB colorspace conversion
matrix, etc.

Signed-off-by: Rob Clark <rob@ti.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
(cherry picked from commit 4d93914ae3db4a897ead4b1e33eca7cdfff4c6f7)

BUG=chrome-os-partner:17074
TEST=Use hardware cursor with kernel v3.8 and v3.4 and no flicker on screen.

Change-Id: I8f50d93443cc6c51f06d553cd0286fff11de3269
Signed-off-by: Prathyush K <prathyush.k@samsung.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/40516
Tested-by: Prathyush Kalashwaram <prathyush@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Commit-Queue: Stéphane Marchesin <marcheu@chromium.org>