mei: bus: simplify how we build nfc bus name

Remove the dependency on struct ndev from the nfc device
name creation function so it is possible to use it
in a fixup routine

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>