[media] doc-rst: Split v4l-core into one file per kAPI

Sphinx produce a 1:1 mapping between a rst file and an html file.

So, we need to split the kernel-doc tags on multiple documents.

A side effect is that we're now having a better name for each
section of the kAPI documentation.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/media/kapi/v4l2-async.rst

+V4L2 Async kAPI
+^^^^^^^^^^^^^^^
+
+.. kernel-doc:: include/media/v4l2-async.h

Documentation/media/kapi/v4l2-controls.rst

@@ -807,3 +807,8 @@ notify function is called.
 
 There can be only one notify function per control handler. Any attempt
 to set another notify function will cause a WARN_ON.
+
+V4L2 control kAPI
+-----------------
+
+.. kernel-doc:: include/media/v4l2-ctrls.h

Documentation/media/kapi/v4l2-core.rst

 Video2Linux devices
 -------------------
 
-.. kernel-doc:: include/media/tuner.h
-
-.. kernel-doc:: include/media/tuner-types.h
-
-.. kernel-doc:: include/media/tveeprom.h
-
-.. kernel-doc:: include/media/v4l2-async.h
-
-.. kernel-doc:: include/media/v4l2-ctrls.h
-
-.. kernel-doc:: include/media/v4l2-device.h
-
-.. kernel-doc:: include/media/v4l2-dv-timings.h
-
-.. kernel-doc:: include/media/v4l2-event.h
-
-.. kernel-doc:: include/media/v4l2-flash-led-class.h
-
-.. kernel-doc:: include/media/v4l2-mc.h
-
-.. kernel-doc:: include/media/v4l2-mediabus.h
-
-.. kernel-doc:: include/media/v4l2-mem2mem.h
-
-.. kernel-doc:: include/media/v4l2-of.h
-
-.. kernel-doc:: include/media/v4l2-rect.h
-
-.. kernel-doc:: include/media/v4l2-subdev.h
-
-.. kernel-doc:: include/media/videobuf2-core.h
-
-.. kernel-doc:: include/media/videobuf2-v4l2.h
-
-.. kernel-doc:: include/media/videobuf2-memops.h
+.. toctree::
+    :maxdepth: 1
+
+    v4l2-framework
+    v4l2-async
+    v4l2-controls
+    v4l2-device
+    v4l2-dv-timings
+    v4l2-event
+    v4l2-flash-led-class
+    v4l2-mc
+    v4l2-mediabus
+    v4l2-mem2mem
+    v4l2-of
+    v4l2-rect
+    v4l2-subdev
+    v4l2-tuner
+    v4l2-tveeprom
+    v4l2-videobuf2
+    v4l2-videobuf

Documentation/media/kapi/v4l2-device.rst

+V4L2 Device kAPI
+^^^^^^^^^^^^^^^^
+
+.. kernel-doc:: include/media/v4l2-device.h

Documentation/media/kapi/v4l2-dv-timings.rst

+V4L2 DV Timings kAPI
+^^^^^^^^^^^^^^^^^^^^
+
+.. kernel-doc:: include/media/v4l2-dv-timings.h

Documentation/media/kapi/v4l2-event.rst

+V4L2 event kAPI
+^^^^^^^^^^^^^^^
+
+.. kernel-doc:: include/media/v4l2-event.h

Documentation/media/kapi/v4l2-flash-led-class.rst

+V4L2 Flash and LED class kAPI
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. kernel-doc:: include/media/v4l2-flash-led-class.h

Documentation/media/kapi/v4l2-mc.rst

+V4L2 Media Controller kAPI
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. kernel-doc:: include/media/v4l2-mc.h

Documentation/media/kapi/v4l2-mediabus.rst

+V4L2 Media Bus kAPI
+^^^^^^^^^^^^^^^^^^^
+
+.. kernel-doc:: include/media/v4l2-mediabus.h

Documentation/media/kapi/v4l2-mem2mem.rst

+V4L2 Memory to Memory kAPI
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+.. kernel-doc:: include/media/v4l2-mem2mem.h

Documentation/media/kapi/v4l2-of.rst

+V4L2 Open Firmware kAPI
+^^^^^^^^^^^^^^^^^^^^^^^
+.. kernel-doc:: include/media/v4l2-of.h

Documentation/media/kapi/v4l2-rect.rst

+V4L2 rect kAPI
+^^^^^^^^^^^^^^
+
+.. kernel-doc:: include/media/v4l2-rect.h

Documentation/media/kapi/v4l2-subdev.rst

+V4L2 subdev kAPI
+^^^^^^^^^^^^^^^^
+
+.. kernel-doc:: include/media/v4l2-subdev.h

Documentation/media/kapi/v4l2-tuner.rst

+Tuner kAPI
+^^^^^^^^^^
+
+.. kernel-doc:: include/media/tuner.h
+
+.. kernel-doc:: include/media/tuner-types.h

Documentation/media/kapi/v4l2-tveeprom.rst

+Hauppauge TV EEPROM kAPI
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. kernel-doc:: include/media/tveeprom.h

Documentation/media/kapi/v4l2-videobuf2.rst

+V4L2 videobuf2 kAPI
+^^^^^^^^^^^^^^^^^^^
+
+.. kernel-doc:: include/media/videobuf2-core.h
+
+.. kernel-doc:: include/media/videobuf2-v4l2.h
+
+.. kernel-doc:: include/media/videobuf2-memops.h

Documentation/media/media_kapi.rst

@@ -28,9 +28,6 @@ For more details see the file COPYING in the source distribution of Linux.
     :maxdepth: 5
     :numbered:
 
-    kapi/v4l2-framework
-    kapi/v4l2-controls
-    kapi/videobuf
     kapi/v4l2-core
     kapi/dtv-core
     kapi/rc-core