disp: msm: sde: Add additional property for queuing LTM buffer

Add 3 properties for queuing LTM histogram buffers to remove the
limitation that we cannot send two buffers back in the same display
commit.

Change-Id: Ia37c6d9e7faa6b5a086a9737e20c44eed865c66d
Signed-off-by: Ping Li <pingli@codeaurora.org>