linux-imx

ARM: dts: am335x-sl50: Enable UART1.

The UART1 is connected to the infrared (IR) receiver module, so enable it
to be able to comunicate with it.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>