Merge tag 'usb-serial-4.8-rc1' of...

Merge tag 'usb-serial-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial

 into usb-testing

Johan writes:

USB-serial updates for v4.8-rc1

Mostly clean ups, including the first few patches of a major overhaul of
the ti_usb_3410_5052 driver.

Included is also a new option-driver device id.

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