hw/bsp/dialog: Configure default settings for UARTs
hw/bsp/dialog: Configure default settings for UARTs

Note that UART_0 and UART_1 have the same TX and RX pins set by default.
This is because "uart0" is usually the default device to use, but since
it does not support RTS/CTS it may be required to switch to "uart1"
instead - pins will be already configured.

mlaz/mynewt-core,mlaz/mynewt-core,mlaz/mynewt-core,mlaz/mynewt-core,mlaz/mynewt-core