WiFi: Add control over SSID size for SoftAP

SSID max length is 32, avoiding to save a too long  SSID (larger than 32 bytes)
prevent to make Softap enabling stuck.

Change-Id: Ibce16b52019d7fc7240517d2869ec0293ed2ae77
Orig-Change-Id: I4fdf56ef0ede609bf73786d2837929d8cb737cd5
Signed-off-by: Honore Tricot <honorex.tricot@intel.com>
Signed-off-by: Jean-Marie Lemetayer <jean-mariex.lemetayer@intel.com>
Signed-off-by: Jian Luo <jian.luo@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
Signed-off-by: Jack Ren <jack.ren@intel.com>
Author-tracking-BZ: 29110