InOrder: Make cache_unit.hh include hashmap.hh explicitly, not transitively.
InOrder: Make cache_unit.hh include hashmap.hh explicitly, not transitively.

andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin