runtime/internal/atomic: add loong64 operators for And/Or
These primitives will be used by the new And/Or sync/atomic apis.
For #61395
Change-Id: I64b2e599e4f91412e0342aa01f5fd53271e9a333
GitHub-Last-Rev:
9755db5406b84dd84fa5432382bfabc801a34ed3
GitHub-Pull-Request: golang/go#63314
Reviewed-on: https://go-review.googlesource.com/c/go/+/531895
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>