drivers/pci/intr_remapping.c: include acpi.h

Fix this build error:
drivers/pci/intr_remapping.c: In function 'ir_parse_ioapic_scope':
drivers/pci/intr_remapping.c:617: error: invalid use of undefined type
				         'struct acpi_dmar_hardware_unit'

Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c
index 472be1c3fff0..f5e0ea724a6f 100644
--- a/drivers/pci/intr_remapping.c
+++ b/drivers/pci/intr_remapping.c
@@ -9,6 +9,7 @@
 #include <asm/cpu.h>
 #include <linux/intel-iommu.h>
 #include "intr_remapping.h"
+#include <acpi/acpi.h>
 
 static struct ioapic_scope ir_ioapic[MAX_IO_APICS];
 static int ir_ioapic_num;