hostapd: Fixes after merge.

NoSwapWifiPrimaryChannel has to be implemented in a new
file, as hostapd code moved around.

src/ap/beacon.c had some rearrangement, taxonomy code
must now look up the STA itself.

This gets us to a working hostapd current as of:
This includes fixing CVE-2015-1863.

Change-Id: I3655bc5fc908ec00c55a8e4281161bd22ae42c41
4 files changed