ARM: mx53: Add support for missing UARTs

MX53 has five UART ports.

Add support for the missing UART4 and UART5 ports.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
4 files changed