drm/msm: merge dpu_format and mdp_format in struct msm_format

Structures dpu_format and mdp_format are largely the same structures.
In order to remove duplication between format databases, merge these two
stucture definitions into the global struct msm_format.

Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/590434/
Link: https://lore.kernel.org/r/20240420-dpu-format-v2-5-9e93226cbffd@linaro.org