ARM: meson: add A1 support

Add support for Amlogic A1 SoC family.

Signed-off-by: Igor Prusov <ivprusov@sberdevices.ru>
Signed-off-by: Evgeny Bachinin <eabachinin@sberdevices.ru>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230505125639.3605-4-ivprusov@sberdevices.ru


Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>