[llvm] [AArch64] Set MaxInterleaving to 4 for Neoverse V2 (PR #100385)

[Sjoerd Meijer via llvm-commits]

sjoerdmeijer wrote:

> Can we add Neoverse V3 too? Otherwise this sounds OK to me.

Sorry Dave, I accidentally dropped that when I merged and reworked my patches, I will put it back in and a test too. 

https://github.com/llvm/llvm-project/pull/100385