arm: Add export.h to ARM specific files as required.

These files all make use of one of the EXPORT_SYMBOL variants
or the THIS_MODULE macro.  So they will need <linux/export.h>

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/arch/arm/common/it8152.c b/arch/arm/common/it8152.c
index a7934ba..b539ec8 100644
--- a/arch/arm/common/it8152.c
+++ b/arch/arm/common/it8152.c
@@ -25,6 +25,7 @@
 #include <linux/ioport.h>
 #include <linux/irq.h>
 #include <linux/io.h>
+#include <linux/export.h>
 
 #include <asm/mach/pci.h>
 #include <asm/hardware/it8152.h>