media: dvb CA docs: place undocumented data together with ioctls

Right now, the same undocumented structs are on two places:
at ca_data_types.rst and together with their ioctls.

Move them to just one place and use the standard way to
represent them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/media/uapi/dvb/ca-get-msg.rst

@@ -28,37 +28,17 @@ Arguments
 ``msg``
   Pointer to struct :c:type:`ca_msg`.
 
+.. c:type:: ca_msg
 
-.. c:type:: struct ca_msg
-
-.. flat-table:: struct ca_msg
-    :header-rows:  1
-    :stub-columns: 0
-
-    -
-      - type
-      - name
-      - description
-    -
-       - unsigned int
-       - index
-       -
-
-    -
-       - unsigned int
-       - type
-       -
-
-    -
-       - unsigned int
-       - length
-       -
-
-    -
-       - unsigned char
-       - msg[256]
-       -
+.. code-block:: c
 
+    /* a message to/from a CI-CAM */
+    struct ca_msg {
+	unsigned int index;
+	unsigned int type;
+	unsigned int length;
+	unsigned char msg[256];
+    };
 
 Description
 -----------

Documentation/media/uapi/dvb/ca-set-descr.rst

@@ -28,6 +28,16 @@ Arguments
 ``msg``
   Pointer to struct :c:type:`ca_descr`.
 
+.. c:type:: ca_descr
+
+.. code-block:: c
+
+    struct ca_descr {
+	unsigned int index;
+	unsigned int parity;
+	unsigned char cw[8];
+    };
+
 
 Description
 -----------

Documentation/media/uapi/dvb/ca_data_types.rst

@@ -7,35 +7,3 @@ CA Data Types
 *************
 
 .. kernel-doc:: include/uapi/linux/dvb/ca.h
-
-.. c:type:: ca_msg
-
-Undocumented data types
-=======================
-
-.. note::
-
-   Those data types are undocumented. Documentation is welcome.
-
-.. c:type:: ca_msg
-
-.. code-block:: c
-
-    /* a message to/from a CI-CAM */
-    struct ca_msg {
-	unsigned int index;
-	unsigned int type;
-	unsigned int length;
-	unsigned char msg[256];
-    };
-
-
-.. c:type:: ca_descr
-
-.. code-block:: c
-
-    struct ca_descr {
-	unsigned int index;
-	unsigned int parity;
-	unsigned char cw[8];
-    };