rtlwifi: rtl8192c: Prevent reconnect attempts if not connected

This driver has a watchdog timer that attempts to reconnect when beacon frames
are not seen for 6 seconds. This patch disables that reconnect whenever the
device has never been connected.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>