staging: brcm80211: brcmfmac: bug fix - scan result report

Scan result was reported with some duplicated information.
Those were about SSID/ rate. With this patch, the duplication
can be erased.

Signed-off-by: Nohee Ko <noheek@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>