mem: Tidy up BaseCache parameters
mem: Tidy up BaseCache parameters

This patch simply tidies up the BaseCache parameters and removes the
unused "two_queue" parameter.
(transplanted from b3b9097f44a9fe4440de4d6ab8591329218f04ea)

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