qcacld-3.0: Potential out of memory access when call add_sbs_chlist_to_pcl

Limit num_channels to be less than NUM_CHANNELS to fix potential
out of memory access when calling add_sbs_chlist_to_pcl in the
policy_mgr_get_channel_list.

Change-Id: I58fdbc67b7692c7d1dff5aca6cbd6dc67115a65c
CRs-Fixed: 3416540

components/cmn_services/policy_mgr/src/wlan_policy_mgr_core.c

@@ -3088,6 +3088,8 @@ QDF_STATUS policy_mgr_get_channel_list(struct wlan_objmgr_psoc *psoc,
 		goto end;
 	}
 
+	num_channels = QDF_MIN(num_channels, NUM_CHANNELS);
+
 	/* Let's divide the list in 2.4 & 5 Ghz lists */
 	for (i = 0; i < num_channels; i++) {
 		if (wlan_reg_is_24ghz_ch_freq(channel_list[i])) {