This allows system maintenance login if the root password is empty.
(From OE-Core rev: 28bb8fe5c144e02c28bff54b5b81c8da33b9f58b)
Signed-off-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>