Speed up ArmV7Operand.type assertions (#1313)
Speed up ArmV7Operand.type assertions (#1313)

* Speed up ArmV7Operand.type assertions

So .type will now just return the value instead of building a mapping
and returning a result.

* Update manticore/native/cpu/arm.py

* Revert debug changes

trailofbits/manticore,trailofbits/manticore,montyly/manticore,trailofbits/manticore,montyly/manticore