arm64: tegra: Fix CPU compatible string to cortex-a78ae on Tegra234

arm64: tegra: Fix CPU compatible string to cortex-a78ae on Tegra234

The Tegra234 SoC uses Cortex-A78AE cores, not Cortex-A78. Update the
compatible string for all CPU nodes to match the actual hardware.

Tegra234 hardware reports:
  # head /proc/cpuinfo | egrep 'implementer|part'
  CPU implementer : 0x41
  CPU part        : 0xd42

Which maps to (from arch/arm64/include/asm/cputype.h):
  #define ARM_CPU_IMP_ARM              0x41
  #define ARM_CPU_PART_CORTEX_A78AE    0xD42

Fixes: a12cf5c339b08 ("arm64: tegra: Describe Tegra234 CPU hierarchy")
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>