drm/i915/adl_p: Implement Wa_22012358565

Implement Wa_22012358565 to avoid underrun with 32bpp cursor
in some high bandwidth scenarios. The implementation calls for
overriding the arbitration slots for the planes.

v2: Fix adlp_plane_ctl_arb_slots() return type

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210526173600.27708-2-ville.syrjala@linux.intel.com


Reviewed-by: José Roberto de Souza <jose.souza@intel.com>