[NFC][PowerPC] adding the options for register names and VSR to VR (#157007)

NFC patch to add the flags -ppc-asm-full-reg-names --ppc-vsr-nums-as-vr
to the following test files
```
llvm/test/CodeGen/PowerPC/recipest.ll
llvm/test/CodeGen/PowerPC/setcc-logic.ll
llvm/test/CodeGen/PowerPC/vector-popcnt-128-ult-ugt.ll
```

Created this PR based on this discussion:
#151971 (comment)

Co-authored-by: himadhith <[email protected]>

Author: Himadhith