[llvm] [AArch64] Set the cache line size to 64 for the V2 and V3. (PR #148213)

[Ryotaro Kasuga via llvm-commits]

https://github.com/kasuga-fj commented:

Regarding to the change of this PR, I think it's fine if it follows the specification of NeoverseV2 and V3 (I'm not familiar with them). But I think it would be better to merge this after correctness issues of LoopInterchange are resolved to avoid some troubles.

https://github.com/llvm/llvm-project/pull/148213