msm: mdss: MISR based CRC validation

MISR allows a CRC to be generated from contents of a
particular hw block which can be used for validation.
Enable setup of misr and APIs to obtain CRC from hw blocks.

Change-Id: Ib07e31cba45d242922bd28b6b306220efece7b8d
Acked-by: Sachin Bhayare <sbhayare@qti.qualcomm.com>
Signed-off-by: Mayank Chopra <makchopra@codeaurora.org>