Revert^2 "Expose AID_KEYSTORE" am: 37a413d1c3 am: fe8e0de9a9 am: 61ce76485f

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1670266

Change-Id: I4796c9ed21699aa1ddaa63094101e19c493101e8
diff --git a/libcutils/Android.bp b/libcutils/Android.bp
index 0f3763c..a99cae2 100644
--- a/libcutils/Android.bp
+++ b/libcutils/Android.bp
@@ -363,8 +363,9 @@
     local_include_dirs: ["include"],
     bindgen_flags: [
         "--whitelist-function", "multiuser_get_app_id",
-        "--whitelist-function", "multiuser_get_user_id",
         "--whitelist-function", "multiuser_get_uid",
+        "--whitelist-function", "multiuser_get_user_id",
+        "--whitelist-var", "AID_KEYSTORE",
         "--whitelist-var", "AID_USER_OFFSET",
     ],
 }