add DRANAP debug constant

Change-Id: I6132198ea86979e0ed84df32f2b7117feba497f2
diff --git a/openbsc/src/libcommon/debug.c b/openbsc/src/libcommon/debug.c
index 7fb3ecb..232f6f7 100644
--- a/openbsc/src/libcommon/debug.c
+++ b/openbsc/src/libcommon/debug.c
@@ -165,6 +165,11 @@
 		.description = "BSC/NAT IMSI based filtering",
 		.enabled = 1, .loglevel = LOGL_DEBUG,
 	},
+	[DRANAP] = {
+		.name = "DRANAP",
+		.description = "Radio Access Network Application Part Protocol",
+		.enabled = 1, .loglevel = LOGL_DEBUG,
+	},
 };
 
 enum log_filter {