Allow device to be unprovisioned

bug: 12247651
Change-Id: I564ac8de3da2430342a028f4058e2c5ac2d85d5e
diff --git a/include/media/IDrm.h b/include/media/IDrm.h
index 32ae28e..68de87a 100644
--- a/include/media/IDrm.h
+++ b/include/media/IDrm.h
@@ -70,6 +70,8 @@
                                               Vector<uint8_t> &certificate,
                                               Vector<uint8_t> &wrappedKey) = 0;
 
+    virtual status_t unprovisionDevice() = 0;
+
     virtual status_t getSecureStops(List<Vector<uint8_t> > &secureStops) = 0;
 
     virtual status_t releaseSecureStops(Vector<uint8_t> const &ssRelease) = 0;