FROMGIT: dt-bindings: mediatek: add description for postmask

add description for postmask
postmask is used control round corner for display frame

Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

(cherry picked from commit 71aacdfce044d6136e427c7aaf1715d13ed9f57c
https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git mediatek-drm-next)

BUG=b:153619806
TEST=emerge-kukui chromeos-kernel-5_10

Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Change-Id: I3b9e933c0003d78e51dba8703f41fa57e0787174
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/2639732
Commit-Queue: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/2644676
1 file changed