drivers/tty: use printk_ratelimited() instead of printk_ratelimit()

Since the printk_ratelimit() shouldn't be used anymore (see comment in
include/linux/printk.h), replace it with printk_ratelimited().

Signed-off-by: Manuel Zerpies <manuel.f.zerpies@ww.stud.uni-erlangen.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --cc drivers/tty/moxa.c
Simple merge

diff --cc drivers/tty/mxser.c
Simple merge

diff --cc drivers/tty/tty_io.c
Simple merge