backport mac80211, hostapd, iw, crda from trunk as of r26369 git-svn-id: svn://svn.openwrt.org/openwrt/branches/backfire@26370 3c298f89-4303-0410-b956-a3cf2f4a3e73
mac80211: sync with trunk (as of r25965) git-svn-id: svn://svn.openwrt.org/openwrt/branches/backfire@25966 3c298f89-4303-0410-b956-a3cf2f4a3e73
mac80211: backport latest version from trunk git-svn-id: svn://svn.openwrt.org/openwrt/branches/backfire@25693 3c298f89-4303-0410-b956-a3cf2f4a3e73