drm/i915/display: Move as sdp params change to fastset

as_sdp param changes from vrr to cmrr should happen to fastset.
Changing as_sdp params should not trigger any modeset.

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250130051609.1796524-7-mitulkumar.ajitkumar.golani@intel.com