ia64: Add export.h to arch/ia64 specific files as required

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index aa2533a..2c27714 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -20,6 +20,7 @@
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/bootmem.h>
+#include <linux/export.h>
 
 #include <asm/machvec.h>
 #include <asm/page.h>