MIPS: Octeon: cavium_octeon_defconfig: Enable more drivers

Compile USB driver statically, enable EDAC driver, and remove
deprecated options.

Signed-off-by: Steven J. Hill <steven.hill@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16795/


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