lakitu-kernel-5_10: fix tcmalloc on lakitu-arm64

Switch to using 48-bit VA on ARM64. It's a requirement for tcmalloc.

BUG=b/187987413
TEST=presubmit
RELEASE_NOTE=None

Change-Id: I476c0c1383272063c38fd67d6bca3fa9941d425b
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/16590
Reviewed-by: Meena Shanmugam <meenashanmugam@google.com>
Reviewed-by: Roy Yang <royyang@google.com>
Tested-by: Oleksandr Tymoshenko <ovt@google.com>
2 files changed