dt-bindings: pinctrl: rt2880: add missing pin groups and functions

dt-bindings: pinctrl: rt2880: add missing pin groups and functions

Add the missing pin groups:
jtag, wdt

Add the missing functions:
i2s, jtag, pcie refclk, pcie rst, pcm, spdif2, spdif3, wdt refclk, wdt rst

Sort pin groups and functions in alphabetical order. Fix a typo.

Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20220310140542.7483-1-arinc.unal@arinc9.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>