ARC: Override pseudos with pointers

This ports llvm#159881 fix for other targets and fixes
```
error: missing target override for pseudoinstruction using PointerLikeRegClass
```

Author: MaskRay

llvm/lib/Target/ARC/ARC.td

@@ -24,6 +24,8 @@ include "ARCRegisterInfo.td"
 include "ARCInstrInfo.td"
 include "ARCCallingConv.td"
 
+defm : RemapAllTargetPseudoPointerOperands<GPR32>;
+
 def ARCInstrInfo : InstrInfo;
 
 class Proc<string Name, list<SubtargetFeature> Features>