cros-kernel2: Pass HOSTLD to the kernel makefile

Let the kernel build system know which is the host linker, so it does
not try to call ld directly.

BUG=b:242522116
TEST=emerge-betty arcvm-kernel-ack-5_10 chromeos-kernel-5_15 chromeos-kernel-5_10 \
     chromeos-kernel-5_4 chromeos-kernel-4_19 chromeos-kernel-4_14 \
     chromeos-kernel-4_14 upstream-kernel-next upstream-kernel-mainline

Change-Id: I9277d826f95ce8e8a3b7533bcce51720abdd7e50
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/3831910
Tested-by: Ricardo Ribalda <ribalda@chromium.org>
Auto-Submit: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Ricardo Ribalda <ribalda@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/chromiumos-overlay/+/41077
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
11 files changed