Add a new config item p2p_dfs_chan_enable for WFD GO

The item can be overwritten by p2p_supplicant_overlay.conf

Bug: 272298287
Test: Manually verified it working from logs.
Change-Id: I3de7ee1523ceae4116830afd7a4bae4794f81274
diff --git a/wpa_supplicant/config.h b/wpa_supplicant/config.h
index dbb79dd..e1f30c2 100644
--- a/wpa_supplicant/config.h
+++ b/wpa_supplicant/config.h
@@ -854,8 +854,8 @@
 	int p2p_add_cli_chan;
 	int p2p_ignore_shared_freq;
 	int p2p_optimize_listen_chan;
-
 	int p2p_6ghz_disable;
+	int p2p_dfs_chan_enable;
 
 	struct wpabuf *wps_vendor_ext_m1;