msm: vidc: Add HEIF encode support

Add support for HEIF HW encoding which uses HEVC encoder
and performs tile based frame encoding.
Supports configuration of Grid-enable, Quality-factor,
Constant-quality rate control and MainStill profile.

Change-Id: I3062b97f6a713a64119427135f4699d8900810c3
Signed-off-by: Amit Shekhar <ashekhar@codeaurora.org>