The routine that processes received frames was returning the RSSI value for the
signal strength; however, that value is available only for associated APs. As
a result, the strength was the absurd value of 10 dBm. As a result, scans
return incorrect values for the strength, which causes unwanted attempts to roam.

This patch fixes https://bugzilla.kernel.org/show_bug.cgi?id=63881.
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Reported-by: NMatthieu Baerts <matttbe@gmail.com>
Cc: Stable <stable@vger.kernel.org> [3.0 +]
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>