BACKPORT: FROMGIT: drm/i915/dp_mst: Configure MST after the link parameters are reset

The MST topology probing depends on the maximum link parameters -
programmed to DPCD if required by a follow-up patch - so make sure these
parameters are up-to-date before configuring and probing the MST
topology.

Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240722165503.2084999-11-imre.deak@intel.com
(cherry picked from commit 8f1fe39d
 https://gitlab.freedesktop.org/drm/i915/kernel.git

 drm-intel-next)

Conflicts:
   drivers/gpu/drm/i915/display/intel_dp.c

BUG=b:332903004, b:322223603
TEST=Verify the link training fallback for UHBR<->non-UHBR rates

Change-Id: Ie96c0608359602fb988806d0101da0ac2160e43b
Signed-off-by: Rakshith M O <rakshith.m.o@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/5802909


Reviewed-by: Manasi Navare <navaremanasi@chromium.org>
Signed-off-by: Hubert Mazur <hmazur@google.com>