intel-iommu: now needs export.h for EXPORT_SYMBOL_GPL

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

drivers/iommu/intel-iommu.c

@@ -24,6 +24,7 @@
 #include <linux/init.h>
 #include <linux/bitmap.h>
 #include <linux/debugfs.h>
+#include <linux/export.h>
 #include <linux/slab.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>