wil6210: initial support for FTM and AOA

Added initial support for fine timing measurement(FTM)
and angle of arrival (AOA). These features allow a station
to get an accurate indoor location by measuring
distance (FTM) and azimuth/elevation (AOA) to one or more
stations/APs with a known location.

The following APIs are supported:
1. Get FTM/AOA capabilities, currently hard-coded for a
single-shot measurement to an associated AP
2. Start FTM session
3. Receive FTM results
4. Start standalone AOA measurement
5. Receive AOA results

Change-Id: I54ebc1bdff6ed7d91644165b16eb0a4240069321
CRs-Fixed: 1057307
Signed-off-by: Lior David <liord@codeaurora.org>
[merez@codeaurora.org: fix compilation errors]
Signed-off-by: Maya Erez <merez@codeaurora.org>
[ailizaro@codeaurora.org: trivial conflict fixes]
Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>