Staging: octeon: Use preferred kernel type

This patch "uint*_t" type instead of "u*" type was used.
checkpatch.pl issue in octeon driver.

Signed-off-by: Aybuke Ozdemir <aybuke.147@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>