staging:octeon Fix typos in staging:octeon

The below patch is a resend to fix some typos and comments that
I have found while reading.

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Acked-by: David Daney <david.daney@cavium.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>