Secretkeeper implementation: in-HAL/nonsecure impl

Create the default/reference implementation of Secretkeeper HAL. Status
quo, this is non-secure implementation. In reality, the HAL should be
backed by a privileged component such a trusted app.

Bug: 291224769
Test: Topic includes VTS
Change-Id: I6a4ad50482d537f5438de6201275f4020cd827df
diff --git a/security/secretkeeper/default/secretkeeper.rc b/security/secretkeeper/default/secretkeeper.rc
new file mode 100644
index 0000000..f39f9b7
--- /dev/null
+++ b/security/secretkeeper/default/secretkeeper.rc
@@ -0,0 +1,5 @@
+service vendor.secretkeeper /vendor/bin/hw/android.hardware.security.secretkeeper-service.nonsecure
+    interface aidl android.hardware.security.secretkeeper.ISecretkeeper/nonsecure
+    class hal
+    user nobody
+    group nobody