Merge 4.3-rc5 into tty-next

We want the tty fixes and reverts in here as well so that people can
properly test and use it.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/tty/serial/8250/8250_port.c
Simple merge

diff --cc drivers/tty/serial/atmel_serial.c
Simple merge

diff --cc drivers/tty/serial/imx.c
Simple merge