drm/xe/pf: Print runtime registers using debug printer

While we already print VF's runtime registers only under DEBUG_SRIOV
config, we should be still doing it at debug level, not info.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Lukasz Laguna <lukasz.laguna@intel.com>
Link: https://lore.kernel.org/r/20250604190021.725-2-michal.wajdeczko@intel.com