[llvm] [M68k] Fix ODR violation in GISel code (PR #72797)

[Vadim Petrochenkov via llvm-commits]

================
@@ -64,8 +64,8 @@ struct M68kIncomingValueHandler : public CallLowering::IncomingValueHandler {
                            ISD::ArgFlagsTy Flags) override;
 };
 
-struct FormalArgHandler : public M68kIncomingValueHandler {
-  FormalArgHandler(MachineIRBuilder &MIRBuilder, MachineRegisterInfo &MRI)
+struct M68kFormalArgHandler : public M68kIncomingValueHandler {
----------------
petrochenkov wrote:

Ok, moved it to the cpp file.

https://github.com/llvm/llvm-project/pull/72797