Replace ICryptoPlugin's detailed error message

It had been removed since it didn't appear to be needed,
but was found to be necessary for functionality.

Test: gtests pass

Change-Id: Ib716a04218e8d5c81f5d7889a53dfa17beccecef
related-to-bug: 32815560
diff --git a/drm/crypto/1.0/default/CryptoPlugin.cpp b/drm/crypto/1.0/default/CryptoPlugin.cpp
index 7921852..9173d5b 100644
--- a/drm/crypto/1.0/default/CryptoPlugin.cpp
+++ b/drm/crypto/1.0/default/CryptoPlugin.cpp
@@ -119,7 +119,7 @@
             bytesWritten = 0;
         }
 
-        _hidl_cb(toStatus(status), bytesWritten);
+        _hidl_cb(toStatus(status), bytesWritten, detailMessage.c_str());
         return Void();
     }