net: wireless: bcmdhd: Verify SSID length (cherry pick from commit c8a8d33845f07755f3bab9af3ac6a6fa18a09b3d) Ensure SSID length is correct before memcpy Signed-off-by: Ashwin <ashwin.bhat@broadcom.com> Bug: 26571522 Bug: 27240072 Change-Id: I2b0279cd360fad613546c8aa280e0c6f4524763c