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.c b/wpa_supplicant/config.c
index 18abd53..a5d4d81 100644
--- a/wpa_supplicant/config.c
+++ b/wpa_supplicant/config.c
@@ -5396,6 +5396,7 @@
 	{ FUNC(p2p_device_persistent_mac_addr), 0 },
 	{ INT(p2p_interface_random_mac_addr), 0 },
 	{ INT(p2p_6ghz_disable), 0 },
+	{ INT(p2p_dfs_chan_enable), 0 },
 #endif /* CONFIG_P2P */
 	{ FUNC(country), CFG_CHANGED_COUNTRY },
 	{ INT(bss_max_count), 0 },