Updates to cciss documentation.

mkdev.cciss is no longer needed, since it is handled by the MAKEDEV program.
Signed-off-by: James Nelson <james4765@gmail.com>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>