Interlocked intrinsics are not implemented for Loongarch

[am11]

Interlocked intrinsics are not implemented for Loongarch:

runtime/src/coreclr/jit/codegenloongarch64.cpp

Lines 2311 to 2314 in 7ea8631

	void CodeGen::genCodeForCmpXchg(GenTreeCmpXchg* treeNode)
	{
	NYI("unimplemented on LOONGARCH64 yet");
	}

Originally posted by @jkotas in #122571 (comment)

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[am11]

@LuckyXu-HF, @shushanhf, based on #92102, it'd be something like this main...am11:feature/codegen/LA64-atomics (it compiles). Could you test and adjust this patch as needed?

[LuckyXu-HF]

@LuckyXu-HF, @shushanhf, based on #92102, it'd be something like this main...am11:feature/codegen/LA64-atomics (it compiles). Could you test and adjust this patch as needed?

Thank you very much!
We've actually implemented this on our internal branch, but haven't submitted to community yet.
@lawn123 will follow up and track about this.