gpio: tegra186: Allow to enable driver on Tegra234

Support for Tegra234 was added to the tegra186 driver in 1db9b241 (
"gpio: tegra186: Add support for Tegra234"). But the driver is not
selectable on Tegra234. Update the Kconfig entry to allow the driver to be
enabled on Tegra234.

Enable the driver by default on Tegra 234 as well, similar to the other
platforms it supports.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20241113162939.886242-1-lars@metafoo.de


Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>