modules: update LEDE

6b6578feec wireguard: version bump to 0.0.20171101
9740523763 ar71xx: fix LED config for DIR-869 A1
bdf19eec35 ipq806x: nbg6817: sync MAC addresses to the upstream values
2aff2add31 ipq806x: nbg6817: add kmod-fs-ext4 to device packages
63f6408ccc uclient: update to the latest version, fixes fetch of multiple files

modules

@@ -2,7 +2,7 @@ GLUON_FEEDS='openwrt gluon routing luci'
 
 LEDE_REPO=https://git.lede-project.org/source.git
 LEDE_BRANCH=lede-17.01
-LEDE_COMMIT=3eae19acee79d40ecb151a23f1f79110995f9386
+LEDE_COMMIT=6b6578feec74dfe1f5767c573d75ba08cc57c885
 
 PACKAGES_OPENWRT_REPO=https://github.com/openwrt/packages.git
 PACKAGES_OPENWRT_BRANCH=lede-17.01