Wifi: WAPI HAL skeleton

Add HAL implementation skeleton for vendors.
Vendors need to complete the implementation and uncomment
"CONFIG_WAPI_INTERFACE=y" to support WAPI interface.

Bug: 139257562
Test: atest VtsHalWifiSupplicantV1_3TargetTest
Change-Id: Id7a58b242776d641a091b9ede3f147b7d42003d1
diff --git a/hostapd/defconfig b/hostapd/defconfig
index 1a3d9f9..6e2eaa3 100644
--- a/hostapd/defconfig
+++ b/hostapd/defconfig
@@ -377,6 +377,11 @@
 # Experimental implementation of draft-harkins-owe-07.txt
 #CONFIG_OWE=y
 
+# WLAN Authentication and Privacy Infrastructure (WAPI): interface only.
+# Configure the building of the interface which allows WAPI configuration.
+# Note: does not configure WAPI implementation itself.
+#CONFIG_WAPI_INTERFACE=y
+
 # Airtime policy support
 #CONFIG_AIRTIME_POLICY=y