qcacmn: Set TDLS channel offset correctly

Set TDLS channel offset correctly when TDLSSECONDARYCHANNELOFFSET
command is sent with offset 20.

Change-Id: Ifac48da3fea0c83415f3d30caa2919a559f5c3c5
CRs-Fixed: 2341883

umac/regulatory/dispatcher/inc/reg_services_public_struct.h

@@ -547,7 +547,8 @@ enum offset_t {
 	BW40_LOW_PRIMARY = 1,
 	BW40_HIGH_PRIMARY = 3,
 	BW80,
-	BWALL
+	BWALL,
+	BW_INVALID = 0xFF
 };
 
 /**

umac/tdls/core/src/wlan_tdls_ct.c

@@ -975,7 +975,7 @@ int tdls_set_tdls_secoffchanneloffset(struct tdls_soc_priv_obj *tdls_soc,
 		return  -ENOTSUPP;
 	}
 
-	tdls_soc->tdls_channel_offset = 0;
+	tdls_soc->tdls_channel_offset = BW_INVALID;
 
 	switch (offchanoffset) {
 	case TDLS_SEC_OFFCHAN_OFFSET_0:
@@ -1054,7 +1054,7 @@ int tdls_set_tdls_offchannelmode(struct wlan_objmgr_vdev *vdev,
 	switch (offchanmode) {
 	case ENABLE_CHANSWITCH:
 		if (tdls_soc->tdls_off_channel &&
-			tdls_soc->tdls_channel_offset) {
+			tdls_soc->tdls_channel_offset != BW_INVALID) {
 			chan_switch_params.tdls_off_ch =
 				tdls_soc->tdls_off_channel;
 			chan_switch_params.tdls_off_ch_bw_offset =