[media] doc-rst: Fix some Sphinx warnings

Fix all remaining media warnings with ReST that are fixable
without changing at the Sphinx code.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/media/v4l-drivers/cx88.rst

@@ -119,6 +119,7 @@ GPIO 16(I believe) is tied to the IR port (if present).
 From the data sheet:
 
 - Register 24'h20004  PCI Interrupt Status
+
  - bit [18]  IR_SMP_INT Set when 32 input samples have been collected over
  - gpio[16] pin into GP_SAMPLE register.
 

Documentation/media/v4l-drivers/tm6000-cardlist.rst

 TM6000 cards list
-===============
+=================
 
 .. code-block:: none
 

drivers/media/dvb-core/dvb_math.h

@@ -30,11 +30,15 @@
  * @value: The value (must be != 0)
  *
  * to use rational values you can use the following method:
+ *
  *   intlog2(value) = intlog2(value * 2^x) - x * 2^24
  *
  * Some usecase examples:
+ *
  *	intlog2(8) will give 3 << 24 = 3 * 2^24
+ *
  *	intlog2(9) will give 3 << 24 + ... = 3.16... * 2^24
+ *
  *	intlog2(1.5) = intlog2(3) - 2^24 = 0.584... * 2^24
  *
  *
@@ -48,10 +52,13 @@ extern unsigned int intlog2(u32 value);
  * @value: The value (must be != 0)
  *
  * to use rational values you can use the following method:
+ *
  *   intlog10(value) = intlog10(value * 10^x) - x * 2^24
  *
  * An usecase example:
+ *
  *	intlog10(1000) will give 3 << 24 = 3 * 2^24
+ *
  *   due to the implementation intlog10(1000) might be not exactly 3 * 2^24
  *
  * look at intlog2 for similar examples

include/media/media-entity.h

@@ -180,7 +180,9 @@ struct media_pad {
  *			view. The media_entity_pipeline_start() function
  *			validates all links by calling this operation. Optional.
  *
- * .. note:: Those these callbacks are called with struct media_device.@graph_mutex
+ * .. note::
+ *
+ *    Those these callbacks are called with struct media_device.@graph_mutex
  *    mutex held.
  */
 struct media_entity_operations {