Ok, I assume this should go into separate series. It fits both S5PV210 and S3C6410.

This adds support for S3C and S5P architectures (all of my knowledge) to the
serial driver. Since the only difference between them is in clock handling,
this is moved to an arch-dependent separate function.

Most modern architectures should define S3C_UART_HAS_UBRDIVSLOT and S3C_UART_HAS_UINTM.

This adds support for most

Signed-off-by: Alexey Galakhov <agalakhov@gmail.com>
Signed-off-by: Juergen Beisewrt <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>