iwinfo: move builtin hardware database to /usr/share/libiwinfo/hardware.txt

git-svn-id: svn://svn.openwrt.org/openwrt@36449 3c298f89-4303-0410-b956-a3cf2f4a3e73
iwinfo: add hw database file

git-svn-id: svn://svn.openwrt.org/openwrt@36450 3c298f89-4303-0410-b956-a3cf2f4a3e73