qcacmn: Invoke correct api to convert channel to frequency

Currently wifi update channel bw api is using legacy api
wlan reg get chan freq to convert channel numbers to the
frequency which does not take care of the bonded channels
and returns invalid channel number error code for bonded
channels which results in undefined behavior on the user
space application which is using the result of this api.

To address above issue, use the correct api to convert
channel number to frequency.

Change-Id: I80295b0ff502747d5655642f2506283bd3ba0b52
CRs-fixed: 2547546

umac/wifi_pos/src/wifi_pos_main.c

@@ -305,8 +305,9 @@ static void wifi_update_channel_bw_info(struct wlan_objmgr_psoc *psoc,
 	wlan_reg_set_channel_params(pdev, chan, sec_ch_2g, &ch_params);
 	if (ch_params.center_freq_seg0)
 		chan_info->band_center_freq1 =
-			wlan_reg_get_channel_freq(pdev,
-						  ch_params.center_freq_seg0);
+			wlan_reg_legacy_chan_to_freq(
+						pdev,
+						ch_params.center_freq_seg0);
 
 	wifi_pos_psoc->wifi_pos_get_phy_mode(chan, ch_params.ch_width,
 					     &phy_mode);