8250-like uart driver may call early_serial8250_setup to
reuse 8250_early.c character output function.
Signed-off-by: NEddie Huang <eddie.huang@mediatek.com>
Tested-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>