Some additional information from bug 10637.

That bug includes a capture and a screendump of OmniPeek's dissection of
the packet in that capture; this lets us identify some tags as the
center frequency of the 802.11 channel and a set of extended flags used
for 802.11n and 802.11ac.

Show some flags from bug 9586, under the assumption that certain fields
in the Peek tagged header correspond to certain fields in the remote
Peek protocol.

Change-Id: I0f3c2e6638d6cf5f6ec470d65bd574171a2d958d
Reviewed-on: https://code.wireshark.org/review/4969
Reviewed-by: Guy Harris <guy@alum.mit.edu>