staging: octeon-usb octeon-hcd: Fix several typos.

I found that the comments had several typos such as "aenable", "internaly" and some others.
I fixed them all.

Signed-off-by: Laura Lazzati <laura.lazzati.15@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>