Wifi: Add java_api_finder plugin

Add java_api_finder to find APIs that
framework-wifi depends on.

Bug: 146163587
Test: none
Change-Id: I57a101780490a93b358a467590997118b1ef99d0
diff --git a/wifi/Android.bp b/wifi/Android.bp
index 8155922..35a892a 100644
--- a/wifi/Android.bp
+++ b/wifi/Android.bp
@@ -69,6 +69,7 @@
         "//frameworks/base", // TODO(b/140299412) remove once all dependencies are fixed
         "//frameworks/opt/net/wifi/service:__subpackages__",
     ] + test_access_hidden_api_whitelist,
+    plugins: ["java_api_finder"],
 }
 
 droidstubs {