drm/msm/dpu: merge all MDP TOP registers to dpu_hwio.h

There is a separate header containing some of MDP TOP register
definitions, dpu_hwio.h. Move missing register definitions from
dpu_hw_top.c to the mentioned header.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/514242/
Link: https://lore.kernel.org/r/20221207012231.112059-9-dmitry.baryshkov@linaro.org


Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>