Index: abi/include/abi/ipc/interfaces.h
===================================================================
--- abi/include/abi/ipc/interfaces.h	(revision 84876aa4f80a43fe7bb9c01fbe376d900db1cbe4)
+++ abi/include/abi/ipc/interfaces.h	(revision 5bded44c3b071e1eab0e9568b8a3c2aa382e1a83)
@@ -188,4 +188,6 @@
 	INTERFACE_PCI =
 	    FOURCC_COMPACT('p', 'c', 'i', ' ') | IFACE_EXCHANGE_SERIALIZE,
+	INTERFACE_DDEV =
+	    FOURCC_COMPACT('d', 'd', 'e', 'v') | IFACE_EXCHANGE_SERIALIZE,
 	INTERFACE_DISPLAY =
 	    FOURCC_COMPACT('d', 's', 'p', 'l') | IFACE_EXCHANGE_SERIALIZE,