xr_usb_serial_common: bump to 2022-03-30

xr_usb_serial_common: bump to 2022-03-30

This is the latest commit that touches the xr_usb_serial_common-1a dir.
The changes are restricted to whitespace fixes and kernel version
adaptations:
ecc6ebe xr_usb: Use tty_driver_kref_put for kernel 5.15 and above
caf6d25 xr_usb: Use tty_alloc_driver for kernel 5.15 and above
a42b7e6 xr_usb: Compilation fixes for kernel 5.14
497adb7 #39 fix compilation for newer linux kernels
9103471 xr_usb: fix some whitespace errors

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>