Blackfin arch: move EXPORT_SYMBOL() to C files where the symbol is actually defined

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

diff --git a/include/asm-blackfin/string.h b/include/asm-blackfin/string.h
index e8ada91..321f4d9 100644
--- a/include/asm-blackfin/string.h
+++ b/include/asm-blackfin/string.h
@@ -1,6 +1,8 @@
 #ifndef _BLACKFIN_STRING_H_
 #define _BLACKFIN_STRING_H_
 
+#include <linux/types.h>
+
 #ifdef __KERNEL__		/* only set these up for kernel code */
 
 #define __HAVE_ARCH_STRCPY