Printing message at INFO level about available GuC IDs is not that
important, DEBUG level is enough. It will also match message about
available doorbells:

 [ ] xe ... [drm:xe_guc_id_mgr_init [xe]] GT0: using 65535 GuC IDs
 [ ] xe ... [drm:xe_guc_db_mgr_init [xe]] GT0: using 256 doorbells

While at it, use proper "GuC" name.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240701193030.978-1-michal.wajdeczko@intel.com