[llvm] [M68k] Do not allow addressing modes k and q as MOVE targets (llvm#200826) (PR #201653)

[Min-Yih Hsu via llvm-commits]

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mshockwave wrote:

this is not an MC test (LLVM's MC layer is roughly equal to assembler + friends) but a codegen test, please put it under `test/CodeGen/M68k/Data`

https://github.com/llvm/llvm-project/pull/201653