wtmpdb: specify correct pamlibdir

Install pam_wtmpdb.so to pam plugin directoy.

Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-extended/wtmpdb/wtmpdb_0.11.0.bb

@@ -19,7 +19,7 @@ REQUIRED_DISTRO_FEATURES = "pam"
 
 SYSTEMD_SERVICE:${PN} = "wtmpdb-update-boot.service wtmpdb-rotate.service"
 
-EXTRA_OEMESON = " -Dpamlibdir=${libdir}"
+EXTRA_OEMESON = " -Dpamlibdir=${base_libdir}/security"
 
 do_install:append () {
       if [ -d ${D}${prefix}/lib/systemd -a ${D}${prefix}/lib != `dirname ${D}${systemd_unitdir}` ]; then