Create prebuilts for wpa_supplicant

Bug: 367468840
Test: launch cuttlefish, atest CtsWifiTestCases
Change-Id: I7e4b350207ed128dc98c7bc1ff8d2299364ca19e
diff --git a/hostapd/Android.bp b/hostapd/Android.bp
index 8fb93db..58f567c 100644
--- a/hostapd/Android.bp
+++ b/hostapd/Android.bp
@@ -353,3 +353,10 @@
         "src/utils/wpa_debug.c",
     ],
 }
+
+prebuilt_etc {
+    name: "android.hardware.wifi.hostapd.xml.prebuilt",
+    src: "android.hardware.wifi.hostapd.xml",
+    relative_install_path: "vintf",
+    installable: false,
+}