drm/msm/dp: add drm debug logs to dp_pm_resume/suspend

Changes in V2:
-- correct Fixes text
-- drop commit text

Fixes: 601f0479 ("drm/msm/dp: add logs across DP driver for ease of debugging")
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1628609362-2109-1-git-send-email-khsieh@codeaurora.org


Signed-off-by: Rob Clark <robdclark@chromium.org>