arm64: dts: amlogic: meson-g12b-bananapi: switch to enable-gpios

arm64: dts: amlogic: meson-g12b-bananapi: switch to enable-gpios

The recommended name for enable GPIOs property in regulator-gpio is
enable-gpios.  This is also required by bindings:

  meson-g12b-bananapi-cm4-cm4io.dtb: regulator-vddio-c: Unevaluated properties are not allowed ('enable-gpio' was unexpected)

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230725142703.157547-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>