TCXB7-4577,RDKB-42091: Average CPU is increased due to CSI changes(RDKB-38329)
TCXB7-4577,RDKB-42091: Average CPU is increased due to CSI changes(RDKB-38329)

Reason for change: Use wifi_getApAssociatedDeviceDiagnosticResult3 hal
api for XB7 since Broadcom implementation of
wifi_getApAssociatedClientDiagnosticResult is calling
wifi_getApAssociatedDeviceDiagnosticResult3 internally.
Test Procedure: Connect 20 clients, enable mesh and monitor CPU use.
Risks: Low
Signed-off-by: Dharmalakshmi A <Dharmalakshmi_Annamalai@comcast.com>

(cherry picked from commit fbcb55bbb1b2f62f4d3b43e631cd83f9a289768f)
Change-Id: Ifda7ebeaa603982351fb7956b44d80817d5f437c

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