[llvm] [AArch64] Add FPCR register usages to mop4 instructions (PR #135641)

[Virginia Cangelosi via llvm-commits]

virginia-cangelosi wrote:

Yes they will be updated in https://github.com/llvm/llvm-project/pull/130127

But they are still correct for now as there are `let Uses = [FPMR, FPCR] in {` in AArch64SMEInstrInfo.td  Around each of them

https://github.com/llvm/llvm-project/pull/135641