MIPS: Octeon: Get rid of a bunch of MSI IRQ number definitions.

MSI IRQ numbers are allocated dynamically, so there is no reason to
have all these static definitions.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1487/


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