8153172: aarch64: hotspot crashes after the 8.1 LSE patch is merged Summary: Fix scratch register usage in C1 atomic_op to avoid unpredictable instruction Reviewed-by: aph Contributed-by: felix.yang@linaro.org

^build/
^dist/
nbproject/private/
^webrev
^.hgtip
^.bridge2
^.jib/
.DS_Store
.metadata/
.recommenders/