arm64: tegra: Bump #address-cells and #size-cells on Tegra186

arm64: tegra: Bump #address-cells and #size-cells on Tegra186

This was done for Tegra194 and Tegra234 in 2838cfd, but Tegra186 was not
part of that change. The same reasoning for that commit also applies to
Tegra186, plus keeping the archs as close to each other as possible makes
it easier to compare between them and support features concurrently.

Signed-off-by: Aaron Kling <webgeek1234@gmail.com>
Link: https://lore.kernel.org/r/20250419-tegra186-host1x-addr-size-v1-1-a7493882248d@gmail.com
Signed-off-by: Thierry Reding <treding@nvidia.com>