Merge tag 'usb-serial-4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/johan...

Merge tag 'usb-serial-4.5-rc1' of git://git./linux/kernel/git/johan/usb-serial into usb-next

Johan writes:

USB-serial updates for v4.5-rc1

These updates add support for Moxa UPort 1100-series devices through a
new mxu11x0 driver.

The cp210x driver gains proper support for cp2108 devices by working
around a couple of firmware bugs, and generic wait-until-sent support
(e.g. for tcdrain) is also added.

Included are also some general clean ups.

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