dt-bindings: platform: Add Acer Aspire 1 EC

Add binding for the EC found in the Acer Aspire 1 laptop.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Link: https://lore.kernel.org/r/20240315-aspire1-ec-v5-1-f93381deff39@trvn.ru
Signed-off-by: Hans de Goede <hdegoede@redhat.com>