Blackfin arch: cleanup warnings from checkpatch -- no functional changes

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

diff --git a/arch/blackfin/kernel/fixed_code.S b/arch/blackfin/kernel/fixed_code.S
index 99ea296..d8b1ebc 100644
--- a/arch/blackfin/kernel/fixed_code.S
+++ b/arch/blackfin/kernel/fixed_code.S
@@ -8,8 +8,8 @@
  * BF561 SMP).
  */
 #include <linux/linkage.h>
+#include <linux/unistd.h>
 #include <asm/entry.h>
-#include <asm/unistd.h>
 
 .text
 ENTRY(_fixed_code_start)