msm: rotator: non-blocking rotate

Send request to a work queue and return right away.
Work queue will go through the commit queue to do the
rotation. wait_for_finish can be set to true to make
rotation go back to blocking.

Change-Id: Ifc2e36bd24d9681d42105f4ccbb62a8777af2a6c
Signed-off-by: Ken Zhang <kenz@codeaurora.org>
msm: rotator: Enable support for 2-pass fast YUV mode

Add support for 2-pass rotator operation for downscaling
and 90 degree rotation when rotator operates in fast YUV
mode. 2-pass is supported for 420 H2V2 formats.

Change-Id: Ib8ce802a5a8aabe10c88422e3b8d82708c5b05d4
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>