added --path <path_id> to give the information on the 'path-id' of removed device

added --path <path_id> to give the information on the 'path-id' of removed device

<path-id> allows to identify the port to which given device is plugged
in.  In case of hot-removal, udev can pass this information for future
use (eg. write this name as 'cookie' allowing to detect the fact of
reinserting device to the same port).

--path <path-id> parameter has been added to device removal handle
(and char *path has been added to IncrementalRemove() to pass this
value) in order to pass path-id to this handler.

Signed-off-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>