Make dbus depend on libxml2 and link with lib

package/dbus/Config.in

@@ -2,6 +2,7 @@ config BR2_PACKAGE_DBUS
 	bool "dbus"
 	default n
 	select BR2_PACKAGE_EXPAT
+	select BR2_PACKAGE_LIBXML2
 	help
 	  The D-Bus message bus system.
 

package/dbus/dbus.mk

@@ -51,7 +51,7 @@ $(DBUS_DIR)/.configured: $(DBUS_DIR)/.unpacked
 	touch $@
 
 $(DBUS_DIR)/$(DBUS_BINARY): $(DBUS_DIR)/.configured
-	$(MAKE) DBUS_BUS_LIBS="$(STAGING_DIR)/usr/lib/libexpat.so" -C $(DBUS_DIR) all
+	$(MAKE) DBUS_BUS_LIBS="$(STAGING_DIR)/usr/lib/libexpat.so $(STAGING_DIR)/usr/lib/libxml2.so" -C $(DBUS_DIR) all
 
 $(STAGING_DIR)/usr/lib/libdbus-1.so: $(DBUS_DIR)/$(DBUS_BINARY)
 	$(MAKE) DESTDIR=$(STAGING_DIR) -C $(DBUS_DIR)/dbus install
@@ -70,7 +70,7 @@ $(TARGET_DIR)/$(DBUS_TARGET_BINARY): $(STAGING_DIR)/usr/lib/libdbus-1.so
 	-rmdir --ignore-fail-on-non-empty $(TARGET_DIR)/usr/share
 	rm -rf $(TARGET_DIR)/etc/rc.d
 
-dbus: uclibc expat $(TARGET_DIR)/$(DBUS_TARGET_BINARY)
+dbus: uclibc expat libxml2-headers $(TARGET_DIR)/$(DBUS_TARGET_BINARY)
 
 dbus-clean:
 	rm -f $(TARGET_DIR)/etc/dbus-1/session.conf