crosvm: add pkg-config

Add pkg-config to crosvm ebuild.

BUG=chromium:831850
TEST=local build

Change-Id: I3886de9c290beb8192e6e59273174d022b550ae7
Reviewed-on: https://chromium-review.googlesource.com/1161220
Commit-Ready: Jingkui Wang <jkwang@google.com>
Tested-by: Jingkui Wang <jkwang@google.com>
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
2 files changed