config: fixed re-enabling of CFG80211_WEXT
    - Note: CFG80211_WEXT was disabled in 3.19-rc1, not 3.17.
      * git describe and git name-rev show different things.
    - IPW2200_DEBUG=y was set prior to 3.19-rc1, restore it
    - Re-sync arm64 config to match pre-rc1 values.