ARM: dts: aspeed: ethanolx: Enable VUART

Enable Virtual UART (VUART) module. This module provides virtual serial
communication capabilities between host CPU and BMC and can be used for
the Serial-Over-LAN (SoL) feature implementation.

Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>
Link: https://lore.kernel.org/r/20230111121917.1636-1-aladyshev22@gmail.com


Signed-off-by: Joel Stanley <joel@jms.id.au>