libchromeos: Add libminijail to the pc file.

(cherry-picked from
 https://chromium.googlesource.com/a/chromiumos/platform2 at
 7b4a3084d80b9d8e539787639ede95f9ad760948)

Some packages use minijail by including only libchromeos (which includes
libchromeos-minijail).
In this case, libchromeos must export libminijail in the pkgconfig file
in order for the include path to be set correctly.

BUG=None
TEST=trybots.

Change-Id: I818386c63fe9006982b640d7cbdd2238d223646d
Reviewed-on: https://chromium-review.googlesource.com/293811
Trybot-Ready: Bertrand Simonnet <bsimonnet@chromium.org>
Tested-by: Bertrand Simonnet <bsimonnet@chromium.org>
Reviewed-by: Alex Deymo <deymo@chromium.org>
Commit-Queue: Bertrand Simonnet <bsimonnet@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
1 file changed