[llvm] [llvm] Adopt WithMarkup in the MIPS backend (PR #65384)

[Jonas Devlieghere via llvm-commits]

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@@ -213,12 +213,11 @@ void MipsInstPrinter::printMemOperand(const MCInst *MI, int opNum,
     break;
   }
 
-  O << markup("<mem:");
+  WithMarkup M = markup(O, Markup::Memory);
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JDevlieghere wrote:

It keeps the original behavior, but if you're saying that's wrong then I'm happy to update it. 

https://github.com/llvm/llvm-project/pull/65384