msm: sde: Add EVTLOG and REG dump support for SDE rotator

EVTLOG is a memory logging method for reducing logging overhead.
REG dump is used when a fatal error or SMMU fault is happening within
the SDE rotator driver. Both tools are used for crash dump analysis
in SDE rotator.

CRs-Fixed: 1063582
Change-Id: I5ad406187ba590d2fa57d998e9ad79b8a32810ee
Signed-off-by: Benjamin Chan <bkchan@codeaurora.org>