dev-rust/hermit-abi: Add stub ebuild.

This is ABI bindings for the hermit unikernel that will be
conditionally used when compiling library crates for that target.
We'll never need it.

BUG=b:171728575
TEST=emerge-trogdor deqp-runner

Change-Id: I2d324e3bfa1eb7009af093fea33a16a5946f539c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2521897
Tested-by: Eric Anholt <anholt@google.com>
Reviewed-by: Eric Anholt <anholt@google.com>
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
Commit-Queue: Eric Anholt <anholt@google.com>
1 file changed