RDKB-37060 : Blob err when hotspotopen 2g is enabled in cxb3
RDKB-37060 : Blob err when hotspotopen 2g is enabled in cxb3

Reason for change:  cisco xb3 open ath interface is not up when
radio restart is done. Added the check to UP the interface before
configuring interworking.
Test Procedure: Attached to ticket
Risks: Low
Signed-off-by: Vignesh_Manoharan@comcast.com

(cherry picked from commit 05a243110169ccb3ea60929239bc5481dba3705f)
Change-Id: Ie3c8c3cd07d80a0c3a4232f81417323bfbe770fc

rdkcmf/rdkb-CcspWifiAgent,rdkcmf/rdkb-CcspWifiAgent,rdkcmf/rdkb-CcspWifiAgent