Fix build error.

Author: TIFitis

mlir/include/mlir/Conversion/ComplexToROCDLLibraryCalls/ComplexToROCDLLibraryCalls.h

@@ -10,6 +10,7 @@
 #define MLIR_CONVERSION_COMPLEXTOROCDLLIBRARYCALLS_COMPLEXTOROCDLLIBRARYCALLS_H_
 
 #include "mlir/IR/PatternMatch.h"
+#include "mlir/Pass/Pass.h"
 
 namespace mlir {
 class RewritePatternSet;