Merge tag 'usb-serial-5.14-rc8' of https://git.kernel.org/pub/scm/linux/kernel/git...

Merge tag 'usb-serial-5.14-rc8' of https://git./linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB-serial fixes for 5.14-rc8

Here's a fix for a regression in 5.14 (also backported to stable) which
caused reads to stall for ch341 devices.

Included is also a new modem device id.

All but the revert have been in linux-next, and with no reported issues.

* tag 'usb-serial-5.14-rc8' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
  Revert "USB: serial: ch341: fix character loss at high transfer rates"
  USB: serial: option: add new VID/PID to support Fibocom FG150