qcacld-3.0: Fix get channel list with existing connections

Reinitialize pcl_weight index in policy_mgr_get_channel_list
for correct connection count.

Change-Id: I96d38f1cb29014517f2c22e360db5d942eb66519
CRs-Fixed: 2589478

components/cmn_services/policy_mgr/src/wlan_policy_mgr_core.c

@@ -2093,6 +2093,7 @@ QDF_STATUS policy_mgr_get_channel_list(struct wlan_objmgr_psoc *psoc,
 
 	num_channels = 0;
 	sbs_num_channels = 0;
+	i = 0;
 	/* In the below switch case, the channel list is populated based on the
 	 * pcl. e.g., if the pcl is PM_SCC_CH_24G, the SCC channel group is
 	 * populated first followed by the 2.4GHz channel group. Along with