drm/msm/dpu: move csc matrices to dpu_hw_util

Since the type and usage of CSC matrices is spanning across DPU
lets introduce a helper to the dpu_hw_util to return the CSC
corresponding to the request type. This will help to add more
supported CSC types such as the RGB to YUV one which is used in
the case of CDM.

changes in v3:
	- drop the extra wrapper and export the matrices directly

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/571816/
Link: https://lore.kernel.org/r/20231212205254.12422-5-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>