doc-rst: FE_READ_UNCORRECTED_BLOCKS: improve man-like format

Parsing this file were causing lots of warnings with sphinx,
due to the c function prototypes.

Fix that by prepending them with .. c:function::

While here, use the same way we document man-like pages,
at the V4L side of the book and add escapes to asterisks.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/linux_tv/media/dvb/FE_READ_UNCORRECTED_BLOCKS.rst

@@ -6,7 +6,8 @@
 FE_READ_UNCORRECTED_BLOCKS
 **************************
 
-DESCRIPTION
+Description
+-----------
 
 This ioctl call returns the number of uncorrected blocks detected by the
 device driver during its lifetime. For meaningful measurements, the
@@ -14,13 +15,13 @@ increment in block count during a specific time interval should be
 calculated. For this command, read-only access to the device is
 sufficient.
 
-SYNOPSIS
+Synopsis
+--------
 
-int ioctl( int fd, int request =
-:ref:`FE_READ_UNCORRECTED_BLOCKS`,
-uint32_t *ublocks);
+.. c:function:: int ioctl( int fd, int request =FE_READ_UNCORRECTED_BLOCKS, uint32_t *ublocks)
 
-PARAMETERS
+Arguments
+----------
 
 
 
@@ -45,12 +46,13 @@ PARAMETERS
 
     -  .. row 3
 
-       -  uint32_t *ublocks
+       -  uint32_t \*ublocks
 
        -  The total number of uncorrected blocks seen by the driver so far.
 
 
-RETURN VALUE
+Return Value
+------------
 
 On success 0 is returned, on error -1 and the ``errno`` variable is set
 appropriately. The generic error codes are described at the