MIPS/opcodes: Reorder coprocessor moves alphabetically

MIPS/opcodes: Reorder coprocessor moves alphabetically

A number of coprocessor move encodings have been randomly sprinkled over
the regular MIPS and microMIPS opcode tables rather than where they'd be
expected following the alphabetic order.  Fix the ordering, taking into
account precedence where it has to be observed for correct disassembly.
No functional change.