soc/tegra: pmc: Add missing IRQ callbacks on Tegra194

Reuse the IRQ callbacks from Tegra186 on Tegra194. This fixes failures
to request interrupts on Tegra194 due to the missing callbacks.

Cc: Sowjanya Komatineni <skomatineni@nvidia.com>
Fixes: aba19827 ("soc/tegra: pmc: Support wake events on more Tegra SoCs")
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>