netifd: update to latest version, add bridge_empty option

with this option enabled it's possible to create empty bridges

Signed-off-by: Luka Perkov <luka@openwrt.org>

SVN-Revision: 37318

package/network/config/netifd/Makefile

@@ -1,13 +1,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=netifd
-PKG_VERSION:=2013-06-18.1
+PKG_VERSION:=2013-07-13
 PKG_RELEASE=$(PKG_SOURCE_VERSION)
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=git://nbd.name/luci2/netifd.git
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
-PKG_SOURCE_VERSION:=987bdc77deecb928d86b9d710cc3bcfa5b3d80eb
+PKG_SOURCE_VERSION:=5a2ccd7b750162b0d6ee13609f7e1ed5ea827d9d
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
 PKG_MAINTAINER:=Felix Fietkau <nbd@openwrt.org>
 # PKG_MIRROR_MD5SUM:=