scan: print out "Information elements from Probe Response frame" only if certain
scan: print out "Information elements from Probe Response frame" only if certain

If we can't be sure that the IEs were really from a probe
response, avoid printing out that they were, since that's
just confusing to the user.
After kernel commit 0e227084aee3 ("cfg80211: clarify BSS
probe response vs. beacon data") in 3.18 it will set the
NL80211_BSS_PRESP_DATA attribute, so we know for sure; we
can also know if the content is different from the beacon
content.

Reported-by: Denis Kenzior <d320093aac6ddbfe6a5e967f122c9ce84ca00c66@gmail.com>
Signed-off-by: Johannes Berg <bff32994ff0f8d048f262a8388145a71b6071bfe@intel.com>

greearb/iw-ct,greearb/iw-ct