Add support for connecting to hidden networks

Open-webOS-DCO-1.0-Signed-off-by: Sapna Todwal <sapna.todwal@palm.com>

Change-Id: Idfa3883894a8ee23d5f8ce06e92a286e4bda745f
Reviewed-on: http://g2g.palm.com/1163
Reviewed-by: Build Verification
Tested-by: Sapna Todwal <sapna.todwal@palm.com>
Reviewed-by: Keith Derrick <keith.derrick@palm.com>