firewall3: Make IPv6 ULA-Border generation dynamic

This fixes working behind another router which gives out ULAs.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36416 3c298f89-4303-0410-b956-a3cf2f4a3e73
iwinfo: add SR71-15 radio info, fix nl80211 channel/frequency reporting on some architectures

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36417 3c298f89-4303-0410-b956-a3cf2f4a3e73