Detect cn61XX, cn66XX and cn68XX CPUs in cpu_probe_cavium().
Signed-off-by: David Daney <david.daney@cavium.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2777/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>