Add accessor function octeon_irq_get_block_domain() for cores
with a CIU3.
Signed-off-by: NSteven J. Hill <steven.hill@cavium.com>
Acked-by: NDavid Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-watchdog@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17210/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>