drm/amd/display: Add MRQ programming for DCN42

drm/amd/display: Add MRQ programming for DCN42

[Why]
DCN401 didn't have a MRQ present so these fields didn't exist.

They are still present on DCN42 so we need to continue programming
them like we did on DCN35 or we can block have poor meta requesting
efficiency which blocks p-state.

[How]
Add `hubp42_program_requestor` which takes DML21 input and programs
the registers like DCN35 and prior.

Reviewed-by: Leo Chen <leo.chen@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Signed-off-by: Chuanyu Tseng <Chuanyu.Tseng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>