ARM: dts: vexpress: Set stdout-path to serial0 in the chosen node

Specify v2m_serial0 as the device for boot console output through the
stdout-path in the chosen node.

Signed-off-by: Ole P. Orhagen <ole.orhagen@northern.tech>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20240209112807.1345164-2-ole.orhagen@northern.tech


Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>