V4L/DVB (13426): cx18: Rename struct cx18_mdl to struct cx18_mdl_ent

Rename type in anticipation of implementing a struct cx18_mdl type that
actually keeps track of a memory descriptor list.

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/cx18/cx18-queue.c b/drivers/media/video/cx18/cx18-queue.c
index fa1ed78..9061ff3 100644
--- a/drivers/media/video/cx18/cx18-queue.c
+++ b/drivers/media/video/cx18/cx18-queue.c
@@ -201,7 +201,7 @@
 
 		CX18_ERR("Too many buffers, cannot fit in SCB area\n");
 		CX18_ERR("Max buffers = %zd\n",
-			bufsz / sizeof(struct cx18_mdl));
+			bufsz / sizeof(struct cx18_mdl_ent));
 		return -ENOMEM;
 	}