Apply clang-tidy fixes for llvm-qualified-auto in GPUToSPIRVPass.cpp (NFC)

Author: joker-eph

mlir/lib/Conversion/GPUToSPIRV/GPUToSPIRVPass.cpp

@@ -146,7 +146,7 @@ void GPUToSPIRVPass::runOnOperation() {
         builder.setInsertionPoint(funcOp);
         auto newFuncOp = builder.create<func::FuncOp>(
             funcOp.getLoc(), funcOp.getName(), funcOp.getFunctionType());
-        auto entryBlock = newFuncOp.addEntryBlock();
+        auto *entryBlock = newFuncOp.addEntryBlock();
         builder.setInsertionPointToEnd(entryBlock);
         builder.create<func::ReturnOp>(funcOp.getLoc());
         newFuncOp->setAttr(gpu::GPUDialect::getKernelFuncAttrName(),