pinctrl: meson-gxl: Fix typo in AO I2S pins

The AO I2S pins were incorrectly defined with the EE pin offset.

Fixes: 2899adf0

 ("pinctrl: meson: gxl: add i2s output pins")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>