cfg80211: Properly track transmitting and non-transmitting BSS

When holding data of the non-transmitting BSS, we need to keep the
transmitting BSS data on. Otherwise it will be released, and release
the non-transmitting BSS with it.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Change-Id: Iefb74472ffeffafd8461330b78d6bc6bf7abf0f3
CRs-fixed: 2399972
Git-commit: a3584f56de1c808d4383a275b4a74467b19e5645
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git


Signed-off-by: Peng Xu <pxu@codeaurora.org>