soc/tegra: pmc: Select IRQ_DOMAIN_HIERARCHY

Tegra PMC driver depends on IRQ domain hierarchy support, hence select
the IRQ_DOMAIN_HIERARCHY config for SOC_TEGRA_PMC.

Signed-off-by: Petlozu Pravareshwar <petlozup@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>