Merge tag 'usb-serial-4.8-rc4' of...

Merge tag 'usb-serial-4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial

 into usb-linus

Johan writes:

USB-serial fixes for v4.8-rc4

Here are a couple of fixes for non-atomic allocations in write paths,
and some new option device ids.

Signed-off-by: Johan Hovold <johan@kernel.org>