modules: update OpenWrt

8de93ce745 mt76: update to the latest version
85cb473f93 mac80211: add a fix to prevent unsafe queue wake calls during restart
08db9397c9 mac80211: backport tx queue start/stop fix
810ee3b84a kernel: bump 4.14 to 4.14.104
5183df0dbf kernel: bump 4.9 to 4.9.161
eea538204b kernel: fix refcnt leak in LED netdev trigger on interface rename
f1803e3492 oxnas: add SoC restart driver for reboot
1bfe1ce5c4 oxnas: cheery-pick DTS improvements from master
9ee8c8daf4 kernel: bump 4.14 to 4.14.103
e2ba7a4b47 kernel: bump 4.9 to 4.9.160

Compile-tested: ramips-mt7621, ar71xx-generic