buildroot

runc: add missing dependency on host-pkgconf

runc uses pkg-config to detect libseccomp, so we need to depend on it.

Fixes:

  http://autobuild.buildroot.net/results/72f1cf194843b8519a3ebf213cdbf06873809055/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>