netlink: add signed types

Signed types might be needed in NL communication from time to time
(I need s32 in team driver), so add them.

Change-Id: Icc6c8286a1d55313fcc7993d8b02267fe1ef2bdc
CRs-Fixed: 677858
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
cfg80211: pass station supported channel and oper class info

The information of the peer's supported channels and supported operating
classes are required for the driver to perform TDLS off channel
operations. This commit enhances the function nl80211_(new)set_station
to pass this information of the peer to the driver.

Conflicts:
	include/linux/nl80211.h
	net/wireless/nl80211.c

CRs-fixed: 595620
Change-Id: I1d630deb4cf435e7f72e3a59276d3771c2b03114
Signed-off-by: Naresh Jayaram <njayar@codeaurora.org>