lvm2: add explicit selinux support control

package has configure options controlling selinux support,
so we want to explicitly use them via PACKAGECONFIG.

Signed-off-by: Joe Slater <jslater@windriver.com>
Signed-off-by: Chong Lu <Chong.Lu@windriver.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>