project-lakitu: Fix dump-capture-kernel build for aws

The aws profile sets -clang for the dump-capture-kernel. This conflicts
with llvm_ias, which is now enabled by default in cros-kernel2.eclass
with the new cros_sdk. We need to set -llvm_ias for the
dump-capture-kernel to build with the aws profile.

I'm not sure why -clang is set on the hw profile, but it will need
-llvm_ias to build the dump-capture-kernel too. So I'm setting it there
as well, although we should probably have the hw profile use clang at
some point.

BUG=b/177232752
TEST=presubmit
RELEASE_NOTE=None

Change-Id: I0dc1f590acd6041d76bfda17d9b8774a4ad57e52
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/11110
Reviewed-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
Reviewed-by: Saied Kazemi <saied@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
2 files changed