gpio: tegra186: fix resource handling in ACPI probe path

gpio: tegra186: fix resource handling in ACPI probe path

When the Tegra186 GPIO controller is probed through ACPI matching,
the driver emits two error messages during probing:
  "tegra186-gpio NVDA0508:00: invalid resource (null)"
  "tegra186-gpio NVDA0508:00: invalid resource (null)"

Fix this by getting resource first and then do the ioremap.

Fixes: 2606e7c9f5fc ("gpio: tegra186: Add ACPI support")
Cc: stable@vger.kernel.org
Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
Link: https://lore.kernel.org/r/20250327032349.78809-1-kanie@linux.alibaba.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>