DAHDI: usse lower-case name to parse correctly by vty code
diff --git a/openbsc/src/input/dahdi.c b/openbsc/src/input/dahdi.c
index 56851ee..e5d41e0 100644
--- a/openbsc/src/input/dahdi.c
+++ b/openbsc/src/input/dahdi.c
@@ -369,7 +369,7 @@
 static int dahdi_e1_line_update(struct e1inp_line *line);
 
 struct e1inp_driver dahdi_driver = {
-	.name = "DAHDI",
+	.name = "dahdi",
 	.want_write = ts_want_write,
 	.line_update = &dahdi_e1_line_update,
 };