After the commit "btrfs: harden identification of the stale device", we
don't have to match the device path anymore. Instead, we match the dev_t.
So pass in the dev_t instead of the device path, in the call chain
btrfs_forget_devices()->btrfs_free_stale_devices().
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>