pinctrl: tegra: Pass struct tegra_pmx for pin range check

Pass the struct tegra_pmx when checking for the pin range in device
tree. This makes the call site a bit easier to read and will help keep
that readability in a subsequent patch.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20200319122737.3063291-7-thierry.reding@gmail.com


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