add (bi-endian) octeon arch to mips macros
add (bi-endian) octeon arch to mips macros

devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5