ARM64: dts: meson-gxl: Fix pinctrl periphs gpio-ranges

The gpio-range was badly added on the GXL dtsi, the AO pin count is 10
instead of 14.

Fixes: 84412e4e ("ARM64: dts: meson-gxl: Add gpio-ranges properties")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>