qcacmn: Enable Pktlog Support

Retrieve pktlog handle through cdp api.
Register proper callbacks for handling WMI
responses from fw.

Change-Id: Iaa3dca5ba95e41d09c99f6d0bef12880ef8f72c0
CRs-Fixed: 2185217

utils/pktlog/linux_ac.c

@@ -233,10 +233,11 @@ qdf_sysctl_decl(ath_sysctl_pktlog_enable, ctl, write, filp, buffer, lenp, ppos)
 	if (write) {
 		ret = QDF_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer,
 					       lenp, ppos);
-		if (ret == 0)
+		if (ret == 0) {
 			ret = pl_dev->pl_funcs->pktlog_enable(
 					(struct hif_opaque_softc *)scn, enable,
 					cds_is_packet_log_enabled(), 0, 1);
+		}
 		else
 			QDF_TRACE(QDF_MODULE_ID_SYS, QDF_TRACE_LEVEL_DEBUG,
 				  "Line:%d %s:proc_dointvec failed reason %d",