Blackfin arch: move include/asm-blackfin header files to arch/blackfin

Signed-off-by: Bryan Wu <cooloney@kernel.org>

diff --git a/arch/blackfin/mach-common/interrupt.S b/arch/blackfin/mach-common/interrupt.S
index 7f752c8..b27e59d 100644
--- a/arch/blackfin/mach-common/interrupt.S
+++ b/arch/blackfin/mach-common/interrupt.S
@@ -29,7 +29,7 @@
  */
 
 #include <asm/blackfin.h>
-#include <asm/mach/irq.h>
+#include <mach/irq.h>
 #include <linux/linkage.h>
 #include <asm/entry.h>
 #include <asm/asm-offsets.h>
@@ -37,7 +37,7 @@
 #include <asm/traps.h>
 #include <asm/thread_info.h>
 
-#include <asm/mach-common/context.S>
+#include <asm/context.S>
 
 .extern _ret_from_exception