Add a simple helper function to allow drivers to obtain the physical
device location data.
Acked-by: NLen Brown <len.brown@intel.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>
Signed-off-by: NLan Tianyu <tianyu.lan@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>