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

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

Fixes: b840d649 ("pinctrl: meson: gxl: add spdif 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>