Add APEX module for permission.
We need an APEX module for permission to reliably roll back runtime
permission state, specifically, platform runtime-permissions.xml will
be moved into the data directory of this APEX and be rolled back when
PermissionController is rolled back.
Bug: 136503238
Test: build
Change-Id: I93166f8dc4783bd09afa6be19a302fb0c2decd0d
diff --git a/apex/permission/com.android.permission.x509.pem b/apex/permission/com.android.permission.x509.pem
new file mode 100644
index 0000000..4b146c9
--- /dev/null
+++ b/apex/permission/com.android.permission.x509.pem
@@ -0,0 +1,35 @@
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