gpio: tegra186: Add IRQ per bank for Tegra241

Add the number of interrupts per bank for Tegra241 (Grace) to
fix the probe failure.

Fixes: d1056b77 ("gpio: tegra186: Add support for Tegra241")
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>