drm/i915: Reduce combo PHY log spam

drm/i915: Reduce combo PHY log spam

We always check whether combo PHYs need to be re-initialized
after disabling DC states, which leads to log spam. Switch things
around so that we only log something when we actually have to
re-initialized a PHY.

The log spam was exacerbated by commit 41b4c7fe72b6 ("drm/i915:
Disable DC states for all commits") since we now disable DC
states far more often.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230502143906.2401-12-ville.syrjala@linux.intel.com
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>