drm/msm/dpu: Add SA8775P support

Add definitions for the display hardware used on the
Qualcomm SA8775P platform.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Mahadevan <quic_mahap@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/620499/
Link: https://lore.kernel.org/r/20241019-patchv3_1-v5-4-d2fb72c9a845@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

Author: Mahadevan