V4L/DVB (5336): Cx23416 doc updates + rename CX2341X_ENC_UNKNOWN

The documentation of Several miscellaneous commands was updated.
As a result of which the CX2341X_ENC_UNKNOWN command was renamed to
CX2341X_ENC_SET_VERT_CROP_LINE.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/include/media/cx2341x.h b/include/media/cx2341x.h
index 583b062..38c12fe 100644
--- a/include/media/cx2341x.h
+++ b/include/media/cx2341x.h
@@ -166,7 +166,7 @@
 #define CX2341X_ENC_SET_PLACEHOLDER 		0xd7
 #define CX2341X_ENC_MUTE_VIDEO 			0xd9
 #define CX2341X_ENC_MUTE_AUDIO 			0xda
-#define CX2341X_ENC_UNKNOWN			0xdb
+#define CX2341X_ENC_SET_VERT_CROP_LINE		0xdb
 #define CX2341X_ENC_MISC 			0xdc
 
 /* OSD API, specific to the cx23415 */