Merge tag 'usb-serial-5.20-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next

Johan writes:

USB-serial updates for 5.20-rc1

Here are the USB-serial updates for 5.20-rc1, including

 - a fix up of some tty-port initialized comments that had got
   truncated and obfuscated

Included are also various clean ups.

All but the final commit have been in linux-next and with no reported
issues.

* tag 'usb-serial-5.20-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
  USB: serial: fix tty-port initialized comments
  USB: serial: fix repeated word "the" in comments
  USB: serial: io_edgeport: fix spelling mistakes
  USB: serial: use kmemdup instead of kmalloc + memcpy