media: Documentation: Align numbered list, make it a proper ReST

Align lines for numbered list so that Sphinx produces an uniform output
for all list entries. Also indent paragraphs of such list entries for
consistency.

Also use ReST numbered list syntax for the entries.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

Documentation/userspace-api/media/v4l/dev-subdev.rst

@@ -579,20 +579,19 @@ is started.
 
 There are three steps in configuring the streams:
 
-1) Set up links. Connect the pads between sub-devices using the :ref:`Media
-Controller API <media_controller>`
+1. Set up links. Connect the pads between sub-devices using the
+   :ref:`Media Controller API <media_controller>`
 
-2) Streams. Streams are declared and their routing is configured by
-setting the routing table for the sub-device using
-:ref:`VIDIOC_SUBDEV_S_ROUTING <VIDIOC_SUBDEV_G_ROUTING>` ioctl. Note that
-setting the routing table will reset formats and selections in the
-sub-device to default values.
+2. Streams. Streams are declared and their routing is configured by setting the
+   routing table for the sub-device using :ref:`VIDIOC_SUBDEV_S_ROUTING
+   <VIDIOC_SUBDEV_G_ROUTING>` ioctl. Note that setting the routing table will
+   reset formats and selections in the sub-device to default values.
 
-3) Configure formats and selections. Formats and selections of each stream
-are configured separately as documented for plain sub-devices in
-:ref:`format-propagation`. The stream ID is set to the same stream ID
-associated with either sink or source pads of routes configured using the
-:ref:`VIDIOC_SUBDEV_S_ROUTING <VIDIOC_SUBDEV_G_ROUTING>` ioctl.
+3. Configure formats and selections. Formats and selections of each stream are
+   configured separately as documented for plain sub-devices in
+   :ref:`format-propagation`. The stream ID is set to the same stream ID
+   associated with either sink or source pads of routes configured using the
+   :ref:`VIDIOC_SUBDEV_S_ROUTING <VIDIOC_SUBDEV_G_ROUTING>` ioctl.
 
 Multiplexed streams setup example
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -618,11 +617,11 @@ modeled as V4L2 devices, exposed to userspace via /dev/videoX nodes.
 
 To configure this pipeline, the userspace must take the following steps:
 
-1) Set up media links between entities: connect the sensors to the bridge,
-bridge to the receiver, and the receiver to the DMA engines. This step does
-not differ from normal non-multiplexed media controller setup.
+1. Set up media links between entities: connect the sensors to the bridge,
+   bridge to the receiver, and the receiver to the DMA engines. This step does
+   not differ from normal non-multiplexed media controller setup.
 
-2) Configure routing
+2. Configure routing
 
 .. flat-table:: Bridge routing table
     :header-rows:  1
@@ -656,14 +655,14 @@ not differ from normal non-multiplexed media controller setup.
       - V4L2_SUBDEV_ROUTE_FL_ACTIVE
       - Pixel data stream from Sensor B
 
-3) Configure formats and selections
+3. Configure formats and selections
 
-After configuring routing, the next step is configuring the formats and
-selections for the streams. This is similar to performing this step without
-streams, with just one exception: the ``stream`` field needs to be assigned
-to the value of the stream ID.
+   After configuring routing, the next step is configuring the formats and
+   selections for the streams. This is similar to performing this step without
+   streams, with just one exception: the ``stream`` field needs to be assigned
+   to the value of the stream ID.
 
-A common way to accomplish this is to start from the sensors and propagate the
-configurations along the stream towards the receiver,
-using :ref:`VIDIOC_SUBDEV_S_FMT <VIDIOC_SUBDEV_G_FMT>` ioctls to configure each
-stream endpoint in each sub-device.
+   A common way to accomplish this is to start from the sensors and propagate
+   the configurations along the stream towards the receiver, using
+   :ref:`VIDIOC_SUBDEV_S_FMT <VIDIOC_SUBDEV_G_FMT>` ioctls to configure each
+   stream endpoint in each sub-device.