Explictly request the pinctrl info for the UART_AO_A controller,
otherwise we may need to rely on bootloader for the initialization.
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Yixun Lan <yixun.lan@amlogic.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>