rockchip: rk3368: support UART2/4 in board_debug_uart_init()

evb-rk3368 is using UART2 and PX5 evb is using UART4

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Tested-by: Andy Yan <andy.yan@rock-chips.com>
1 file changed