misc: Run pre-commit run on all files in repo

The following command was run:

```
pre-commit run --all-files
```

This ensures all the files in the repository are formatted to pass our
checks.

Change-Id: Ia2fe3529a50ad925d1076a612d60a4280adc40de
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/62572
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>

src/sst/sst_responder_interface.cc

@@ -33,4 +33,4 @@ SSTResponderInterface::SSTResponderInterface()
 {
 }
 
-}; // namespace gem5
+}; // namespace gem5

src/sst/sst_responder_interface.hh

@@ -66,4 +66,4 @@ class SSTResponderInterface
 
 } // namespace gem5
 
-#endif // __SST_RESPONDER_INTERFACE_HH__
+#endif // __SST_RESPONDER_INTERFACE_HH__