[llvm] [RISCV] Add tune features for Andes 45 series cpus (PR #143899)

[Sam Elliott via llvm-commits]

================
@@ -737,7 +742,8 @@ def ANDES_N45 : RISCVProcessorModel<"andes-n45",
                                      FeatureStdExtD,
                                      FeatureStdExtC,
                                      FeatureStdExtB,
-                                     FeatureVendorXAndesPerf]>;
+                                     FeatureVendorXAndesPerf],
+                                    Andes45TuneFeatures>;
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lenary wrote:

```suggestion
                                     Andes45TuneFeatures>;
```

to match the indentation (also needed below)

https://github.com/llvm/llvm-project/pull/143899