kscreenlocker: fix can't unlock screen

Kcheckpass needs a PAM configuration file to communicate with PAM
to verify the password to unlock the screen.

Signed-off-by: Luis Gustavo S. Barreto <gustavo@ossystems.com.br>

recipes-kde/plasma/untier/kscreenlocker/files/kde.pam

@@ -0,0 +1,14 @@
+#%PAM-1.0
+
+auth            requisite       pam_nologin.so
+auth            required        pam_env.so
+auth            required        pam_unix.so nullok
+
+account         required        pam_unix.so
+
+session         required        pam_limits.so
+session         required        pam_unix.so
+-session        optional        pam_systemd.so
+-session        optional        pam_kwallet5.so
+
+password        required        pam_unix.so

recipes-kde/plasma/untier/kscreenlocker/kscreenlocker.bb

@@ -26,12 +26,20 @@ PV = "${PLASMA_VERSION}"
 SRC_URI[md5sum] = "173888c9ce09eb9979c90735b0664d65"
 SRC_URI[sha256sum] = "3ae7c40c4394c32eafe560694b58aafa841f613451a9543d7fbf5d68e79e4bb2"
 
+SRC_URI += "file://kde.pam"
+
+do_install_append() {
+    install -d ${D}${sysconfdir}/pam.d
+    install -m 644 ${WORKDIR}/kde.pam ${D}${sysconfdir}/pam.d/kde
+}
+
 FILES_${PN} += " \
     ${datadir}/dbus-1 \
     ${datadir}/kconf_update \
     ${datadir}/k*5 \
     ${datadir}/plasma \
     ${datadir}/ksmserver \
+    ${sysconfdir} \
     ${OE_QMAKE_PATH_PLUGINS} \
 "