drm/msm/dpu: drop msm_format from struct dpu_hw_fmt_layout

The struct dpu_hw_fmt_layout defines hardware data layout (addresses,
sizes and pitches. Drop format field from this structure as it's not a
part of the data layout.

Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/612242/
Link: https://lore.kernel.org/r/20240903-dpu-mode-config-width-v6-7-617e1ecc4b7a@linaro.org