UPSTREAM: drm/i915/dp_mst: Don't require DSC hblank quirk for a non-DSC compatible mode

If an MST branch device doesn't support DSC for a given mode, but the
MST link has enough BW for the mode, assume that the branch device does
support the mode using an uncompressed stream.

Fixes: 55eaef16 ("drm/i915/dp_mst: Handle the Synaptics HBlank expansion quirk")
Cc: stable@vger.kernel.org # v6.8+
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241009110135.1216498-2-imre.deak@intel.com


(cherry picked from commit 4e75c3e2)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
(cherry picked from commit 2f54e713)

BUG=b:325713868
TEST=CQ

Change-Id: I391ef02c0e81c6003e52040bfc78e3903a7753c8
Signed-off-by: Tim Van Patten <timvp@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/5948231


Reviewed-by: Sean Paul <sean@poorly.run>
Reviewed-by: Drew Davenport <ddavenport@chromium.org>
Signed-off-by: Hubert Mazur <hmazur@google.com>