cmd/internal/obj/sparc64: order args in layout functions to match Plan 9
cmd/internal/obj/sparc64: order args in layout functions to match Plan 9

The names and argument order now match the Go/Plan 9-assembly operand
order, not the SPARC manual.

Change-Id: I5165b4b2a3a9b33b6c54d01b86da476f1b4b48b7

4ad/go,4ad/go,4ad/go,4ad/go,4ad/go,4ad/go,4ad/go,4ad/go