afdo: Add kernel metadata for arm

BUG=b:244337204
TEST=cq

Change-Id: I3a0cac0145f7bdc4b63a791eca2f1ebbb413e3a2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/3887561
Tested-by: Denis Nikitin <denik@chromium.org>
Commit-Queue: Manoj Gupta <manojgupta@chromium.org>
Auto-Submit: Denis Nikitin <denik@chromium.org>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
1 file changed