[compiler-rt] [compiler-rt][tests] Disable a test case unsupported on AArch64 (PR #117628)

[David Green via llvm-commits]

davemgreen wrote:

Does it fix the test to remove the const from this line:?
```
__attribute__((aligned(16))) static const char data[] = {
```
Atomic loads from a constant address potentially needing to store/cas has always been an issue, but (hopefully) doesn't come up very often as it usually doesn't make a lot of sense. That would allow us to keep the test coverage from this test, which otherwise looks useful.

https://github.com/llvm/llvm-project/pull/117628