iommu/amd: Add include of <linux/irqreturn.h>
We currently include <linux/irqreturn.h> in <linux/pci.h>, but I'm about to
remove that from linux/pci.h, so add explicit includes where needed.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h
index e400fbe..cff039d 100644
--- a/drivers/iommu/amd_iommu_types.h
+++ b/drivers/iommu/amd_iommu_types.h
@@ -25,6 +25,7 @@
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/pci.h>
+#include <linux/irqreturn.h>
/*
* Maximum number of IOMMUs supported