[PATCH/MIPS] Add support Octeon's bbit instructions

[Joel Brobecker]

Hi Andrew,

This is a superficial review, I was just glancing at the diff
for no real reason when I spotted a couple of little nits. They
may be specific to the GDB project...

> +/* Return nonzero if the gdbarch is an Octeon series. */
> +static int
> +is_octeon (struct gdbarch *gdbarch)

We'd like to have one empty line between the function documentation
and its declaration.  Also, 2 spaces after the period :-).

-- 
Joel