qerror: QERR_DEVICE_ENCRYPTED: change error message

Match what HMP commands print on DeviceEncrypted errors.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>

qerror.c

diff --git a/qerror.c b/qerror.c
index 082de98..de0a79e 100644
--- a/qerror.c
+++ b/qerror.c
@@ -81,7 +81,7 @@
     },
     {
         .error_fmt = QERR_DEVICE_ENCRYPTED,
-        .desc      = "Device '%(device)' is encrypted",
+        .desc      = "'%(device)' (%(filename)) is encrypted",
     },
     {
         .error_fmt = QERR_DEVICE_FEATURE_BLOCKS_MIGRATION,