qcacmn: Export a reg api to be used by other modules

Export ucfg_reg_get_current_chan_list so that it can be called from
offload layer.

CRs-Fixed: 2339508
Change-Id: I808ccbab7d95d3e896def298bdf7f38f298d97fc

umac/regulatory/dispatcher/src/wlan_reg_ucfg_api.c

@@ -52,6 +52,8 @@ QDF_STATUS ucfg_reg_get_current_chan_list(struct wlan_objmgr_pdev *pdev,
 	return reg_get_current_chan_list(pdev, chan_list);
 }
 
+qdf_export_symbol(ucfg_reg_get_current_chan_list);
+
 QDF_STATUS ucfg_reg_modify_chan_144(struct wlan_objmgr_pdev *pdev,
 				    bool enable_ch_144)
 {