serial: amlogic: Add UART compatible for A1 board

serial: amlogic: Add UART compatible for A1 board

Add additional compatible to allow using serial driver with A1 board.
After compatible change in DTS [1], serial_meson driver should still be
able to work with console device.

[1] https://lore.kernel.org/all/20230705181833.16137-8-ddrokosov@sberdevices.ru/

Signed-off-by: Igor Prusov <ivprusov@salutedevices.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231017213211.121550-2-ivprusov@salutedevices.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>