pinctrl: meson-gxl: Fix inverted registers and add missing pins

Fix some inverted bit numbers in some pinctrl groups and add missing pins
and groups to be in pair with the GXBB pinctrl pins definition.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>