smack-test: add feature check for smack

Signed-off-by: Armin Kuster <akuster808@gmail.com>

recipes-mac/smack/smack-test_1.0.bb

@@ -12,6 +12,10 @@ SRC_URI = " \
 
 S = "${WORKDIR}"
 
+inherit features_check
+
+REQUIRED_DISTRO_FEATURES = "smack"
+
 do_install() {
     install -d ${D}${sbindir}
     install -m 0755 notroot.py ${D}${sbindir}