SPARC: Adjust the "call" instruction so R15 doesn't get marked as a source.
SPARC: Adjust the "call" instruction so R15 doesn't get marked as a source.

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