iommu/vt-d: Return false instead of 0 in irq_remapping_cap()

The function return type is bool, so return false instead
of 0.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 2d99930..913455a 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -84,7 +84,7 @@
 bool irq_remapping_cap(enum irq_remap_cap cap)
 {
 	if (!remap_ops || disable_irq_post)
-		return 0;
+		return false;
 
 	return (remap_ops->capability & (1 << cap));
 }