pinctrl: meson: add pinctrl driver for Amlogic A1

Based on Linux kernel commit:
dabad1ff85611 (pinctrl: meson: add pinctrl driver support for Meson-A1 SoC)

Signed-off-by: Igor Prusov <ivprusov@sberdevices.ru>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230505125639.3605-5-ivprusov@sberdevices.ru


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