Hook up the munmap() syscall for 32-bit x86.
Hook up the munmap() syscall for 32-bit x86.

This is straightforward, as munmapFunc() doesn't do anything.
I've tested it with code running munmap() just in case.

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