Merge changes from topic "tegra194-platform-support"

* changes:
  tests: arm_arch_svc: introduce support for NVIDIA Denver CPUs
  Tegra194: introduce per-CPU Hypervisor Timer Interrupt ID
  Tegra194: skip some timer framework validation tests
  Tegra194: introduce watchdog timer
  Tegra194: timers: increase the step value to 5ms
  Tegra194: create dummy SMMU context for system resume
  Tegra194: introduce system reset
  Tegra194: disable some system suspend test cases
  Tegra194: skip CPU suspend tests requiring SGI as wake source
  Tegra194: wake: introduce support for RTC as wake source
  Tegra194: pwr_mgmt: introduce power management support
  plat: nvidia: introduce platform port for Tegra194
  drivers: ti: uart: introduce UART 16550 driver