MIPS: OCTEON: fix PCI interrupt mapping for D-Link DSR-1000N

Fix PCI interrupt mapping for DSR1000N. This will get the PCI slot
interrupts working. The mapping is based on D-Link GPL tarball.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9593/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>