Merge tag 'usb-serial-7.3-rc4' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB serial fixes for 7.3-rc4

Here are two fixes for a long-standing baud rate overflow issue in the
two Quatech drivers and a new cp210x device id.

Everything has been in linux-next with no reported issues.

* tag 'usb-serial-7.3-rc4' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
  USB: serial: quatech2: fix baud rate overflow
  USB: serial: ssu100: fix baud rate overflow
  USB: serial: cp210x: add Corsair AX1500i Power Supply