cfg80211: Advertise extended capabilities per interface type to userspace

The driver extended capabilities may differ for different
interface types which the userspace needs to know (for
example the fine timing measurement initiator and responder
bits might differ for a station and AP). Add a new nl80211
attribute to provide extended capabilities per interface type
to userspace.

Signed-off-by: Vidyullatha Kanchanapally <vkanchan@qti.qualcomm.com>
Reviewed-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Git-commit: 019ae3a918811715192b22c400ac78d54acc26a9
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git


CRs-fixed: 1030694
Change-Id: I816b21d8433aea9407a14a8c8a5098701ee53b8c
[pkushwah@codeaurora.org: backport to 4.4-This commit includes the
changes from following commits in include/uapi/linux/nl80211.h to compile
for msm-4.4.
38de03d2a28925b489c11546804e2f5418cc17a4 :
nl80211: add feature for BSS selection support.
17b942478643c5a90c06d978479bd326040bfa19 :
cfg80211: allow userspace to specify client P2P PS support.
9b95fe59b18bcc891a6c60ae11d725c9c679574b :
nl80211: add missing kerneldoc for new *_PAD attributes.
2dad624e6dd65c6048a9bbe0e16559fce182c87c :
wireless: use nla_put_u64_64bit().]
Signed-off-by: Purushottam Kushwaha <pkushwah@codeaurora.org>