usb: gadget: printer: SS+ support

commit fd80731e5e9d1402cb2f85022a6abf9b1982ec5f upstream.

We need to treat super speed plus as super speed, not the default,
which is full speed.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/20240620093800.28901-1-oneukum@suse.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit a0886d04f1c7439b55c1c9daecd6b21ada2de5dd)
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>