UPSTREAM: drm/i915/panelreplay: Move out psr_init_dpcd() from init_connector()

Move psr_init_dpcd() from init-connector to connector-detect
function. The dpcd probe for checking panel replay capability
for external dp connector is causing delay during boot which can
be optimized by moving dpcd probe to connector specific detect().

v1: Initial version.
v2: Add details in commit description. [Jani]

Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10284


Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Fixes: cceeaa31 ("drm/i915/panelreplay: Enable panel replay dpcd initialization for DP")
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240229043716.4065760-1-animesh.manna@intel.com


(cherry picked from commit 1cca19bf)

BUG=b:308455498
TEST=Verify Asus PG32UQXR 4K160 mode on Rex using Big Joiner

Change-Id: I67695063b68d8ea93ee4785dd38cf60326d48e89
Signed-off-by: Rakshith M O <rakshith.m.o@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/5802788


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