Blackfin arch: move EXPORT_SYMBOL to the place where it is actually defined

- kernel_thread
 - irq_flags
 - checksum

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

arch/blackfin/mach-common/ints-priority.c

@@ -65,6 +65,7 @@
  * cannot actually mask out in hardware.
  */
 unsigned long irq_flags = 0x1f;
+EXPORT_SYMBOL(irq_flags);
 
 /* The number of spurious interrupts */
 atomic_t num_spurious;