netplug: properly install init.d script.

Looks like this was lost in 20d4792e.

[Peter: use _INSTALL_INIT_SYSV, explicitly delete script on uninstall]
Signed-off-by: Peter Sanford <psanford@nearbuysystems.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/netplug/netplug.mk

@@ -16,10 +16,15 @@ define NETPLUG_INSTALL_TARGET_CMDS
 	$(MAKE) DESTDIR=$(TARGET_DIR) -C $(@D) install
 endef
 
+define NETPLUG_INSTALL_INIT_SYSV
+	$(INSTALL) -m 0755 -D package/netplug/S29netplug \
+		$(TARGET_DIR)/etc/init.d/S29netplug
+endef
+
 define NETPLUG_UNINSTALL_TARGET_CMDS
 	rm -f $(TARGET_DIR)/sbin/netplugd
 	rm -rf $(TARGET_DIR)/etc/netplug*
-	rm -f $(TARGET_DIR)/etc/init.d/S*netplug
+	rm -f $(TARGET_DIR)/etc/init.d/S29netplug
 endef
 
 define NETPLUG_CLEAN_CMDS