gitlab: Generate coverage report for herobrine
gitlab: Generate coverage report for herobrine

As part of the coverage artifacts, build a report for herobrine w/o
zephyr code.

BUG=None
BRANCH=None
TEST=Ran cmds in docker

Signed-off-by: Jeremy Bettis <4df7b5147fee087dca33c181f288ee7dbf56e022@google.com>
Change-Id: I7b1291d4d447769487870fc701a8452aeaffa649
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3173097
Commit-Queue: Jeremy Bettis <4df7b5147fee087dca33c181f288ee7dbf56e022@chromium.org>
Tested-by: Jeremy Bettis <4df7b5147fee087dca33c181f288ee7dbf56e022@chromium.org>
Reviewed-by: Jack Rosenthal <d3f605bef1867f59845d4ce6e4f83b8dc9e4e0ae@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec