serqt_usb2: drag screaming into the 21st century

Fix the termios stuff but while we are at it do something about the rest of
it

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/staging/serqt_usb2/serqt_usb2.c
Simple merge