virtual/modutils: update to EAPI=7

BUG=b:187789240
TEST=CQ passes

Change-Id: I374a1963d3d1bc606ee5d81d30983deffd08df0e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/3917877
Auto-Submit: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Lizzy Presland <zland@google.com>
Commit-Queue: Lizzy Presland <zland@google.com>
1 file changed