arm: pcm052: Add device tree file's

- Add device tree files for Phytec phyCORE-Vybrid Board.
- Enable lpuart support for Phytec phyCORE-Vybrid Board.
- Use UART1 for stdout.

Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>