drm/msm/a6xx: Add support for A663

Add support for Adreno 663 found on sa8775p based platforms.

Signed-off-by: Puranam V G Tejaswi <quic_pvgtejas@quicinc.com>
Signed-off-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/620768/


Signed-off-by: Rob Clark <robdclark@chromium.org>