cmd/compile: intrinsify atomic And/Or on arm64

The atomic And/Or operators were added by the CL 528797,
the compiler does not intrinsify them, this CL does it for
arm64.

Also, for the existing atomicAnd/Or operations, the updated
value are not used, but at that time we need a register to
temporarily hold it. Now that we have v.RegTmp, the new value
is not needed anymore. This CL changes it.

The other change is that the existing operations don't use their
result, but now we need the old value and not the new value for
the result.

And this CL alias all of the And/Or operations into sync/atomic
package.

Peformance on an ARMv8.1 machine:
                      old.txt       new.txt
                      sec/op         sec/op         vs base
And32-160            8.716n ± 0%    4.771n ± 1%  -45.26% (p=0.000 n=10)
And32Parallel-160    30.58n ± 2%   26.45n ± 4% -13.49% (p=0.000 n=10)
And64-160            8.750n ± 1%    4.754n ± 0%  -45.67% (p=0.000 n=10)
And64Parallel-160    29.40n ± 3%    25.55n ± 5%  -13.11% (p=0.000 n=10)
Or32-160             8.847n ± 1%    4.754±1%  -46.26% (p=0.000 n=10)
Or32Parallel-160     30.75n ± 3%    26.10n ± 4%  -15.14% (p=0.000 n=10)
Or64-160             8.825n ± 1%    4.766n ± 0%  -46.00% (p=0.000 n=10)
Or64Parallel-160     30.52n ± 5%    25.89n ± 6%  -15.17% (p=0.000 n=10)

For #61395

Change-Id: Ib1d1ac83f7f67dcf67f74d003fadb0f80932b826
Reviewed-on: https://go-review.googlesource.com/c/go/+/584715
Auto-Submit: Austin Clements <austin@google.com>
TryBot-Bypass: Austin Clements <austin@google.com>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Fannie Zhang <Fannie.Zhang@arm.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

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