rapidio/documentation: fix mangled paragraph in mport_cdev

Minor edits to correct parameter description.

This patch is applicable to kernel versions starting from v4.6.

Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Alexandre Bounine <[e-mail]>
Reported-by: Barry Wood <[e-mail]>
Cc: Matt Porter <[e-mail]>
Cc: Andre van Herk <[e-mail]>
Cc: Barry Wood <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

Documentation/rapidio/mport_cdev.txt

···
 
 - 'dbg_level' - This parameter allows to control amount of debug information
         generated by this device driver. This parameter is formed by set of
-        This parameter can be changed bit masks that correspond to the specific
-        functional block.
+        bit masks that correspond to the specific functional blocks.
         For mask definitions see 'drivers/rapidio/devices/rio_mport_cdev.c'
         This parameter can be changed dynamically.
         Use CONFIG_RAPIDIO_DEBUG=y to enable debug output at the top level.