cfg80211: Add support to update connection parameters

Add functionality to update the connection parameters when in connected
state, so that driver/firmware uses the updated parameters for
subsequent roaming. This is for drivers that support internal BSS
selection and roaming. The new command does not change the current
association state, i.e., it can be used to update IE contents for future
(re)associations without causing an immediate disassociation or
reassociation with the current BSS.

This commit implements the required functionality for updating IEs for
(Re)Association Request frame only. Other parameters can be added in
future when required.

Signed-off-by: vamsi krishna <vamsin@qti.qualcomm.com>
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Git-commit: 088e8df82f91a24728d49d9532cab7ebdee5117f
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git


Change-Id: I184b8e13bc5f7e2ed21e5337673c6ba82cd2f4fe
CRs-Fixed: 1097836
[vidyullatha@codeaurora.org: backport to kernel 4.9 - Fix conflicts]
Signed-off-by: Vidyullatha Kanchanapally <vidyullatha@codeaurora.org>