cciss: add P700m to list of supported controllers

P700m support was added in:
  9cff3b38

Update cciss.txt to match.
Signed-off-by: Ndann frazier <dannf@hp.com>
Acked-by: NMike Miller <mike.miller@hp.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Documentation/cciss.txt

@@ -21,6 +21,7 @@ This driver is known to work with the following cards:
 	* SA E200
 	* SA E200i
 	* SA E500
+	* SA P700m
 	* SA P212
 	* SA P410
 	* SA P410i