staging: usbip: properly handle "-l" / "--log" option

This option is in the long options list, and it's handled in the
option processing loop, but the optstring didn't include it.

Signed-off-by: Anthony Foiani <anthony.foiani@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed