This is the result of automated script conversion:
poky/scripts/contrib/convert-overrides.py meta-selinux

Converting the metadata to use ":" as the override character instead of "_".
Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
Signed-off-by: Joe MacDonald <joe@deserted.net>

enable-audit.bbclass is only used by systemd. And systemd has adapted to
use build tool meson and implement PACKAGECONFIG audit in recipe file of
systemd in oe-core.

So remove implement of PACKAGECONFIG audit from enable-audit.bbclass.
Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Joe MacDonald <joe_macdonald@mentor.com>

Add bbclasses only for target packages to enable selinux support,
not native/nativesdk/cross/crosssdk pacakges.
Signed-off-by: Xin Ouyang <Xin.Ouyang@windriver.com>