staging: dgnc: Fix do not add new typedefs

This patch fixes "do not add new typedefs"
checkpatch.pl warning in dgnc_types.h

Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/dgnc/dgnc_mgmt.c b/drivers/staging/dgnc/dgnc_mgmt.c
index 9e45b85..5544a8e7 100644
--- a/drivers/staging/dgnc/dgnc_mgmt.c
+++ b/drivers/staging/dgnc/dgnc_mgmt.c
@@ -185,7 +185,7 @@
 	{
 		struct channel_t *ch;
 		struct ni_info ni;
-		uchar mstat = 0;
+		unsigned char mstat = 0;
 		uint board = 0;
 		uint channel = 0;