pinctrl: tegra: Renumber the GG.0 and GG.1 pins

There is no need to define these at a specific offset since they are the
only pins defined for this SoC generation. Begin numbering them at 0.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20200319122737.3063291-9-thierry.reding@gmail.com


Tested-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>