stressapptest: Build with clang for cros_arm64

Use clang/lld to build stressapptest when building for arm64
for a 32-bit arm device.

BUG=chromium:1158158
TEST=CQ

Change-Id: Ib43dbf60aca9bdac75d2d3e828812b3dc6daef56
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2588197
Tested-by: Manoj Gupta <manojgupta@chromium.org>
Tested-by: Yilin Yang (kerker) <kerker@chromium.org>
Auto-Submit: Manoj Gupta <manojgupta@chromium.org>
Reviewed-by: Yilin Yang (kerker) <kerker@chromium.org>
Commit-Queue: Manoj Gupta <manojgupta@chromium.org>
2 files changed