ARM: dts: Add Amlogic Meson A1 DT from Linux 6.3-rc7

Import Linux 6.3-rc7 Device tree and necessary bindings for Amlogic A1
board from 6a8f57ae2eb0 ("Linux 6.3-rc7").

Signed-off-by: Igor Prusov <ivprusov@sberdevices.ru>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230505125639.3605-2-ivprusov@sberdevices.ru


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