dt-bindings: pinctrl: Add Allwinner H616 compatible strings

A new SoC, a new compatible string.
Also we were too miserly with just allowing seven interrupt banks.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20210118020848.11721-4-andre.przywara@arm.com


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>