punt Blackfin VDSP headers and import sanitized/auto-generated ones

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/cpu/bf561/cache.S b/cpu/bf561/cache.S
index 5bda5bf..d9015c6 100644
--- a/cpu/bf561/cache.S
+++ b/cpu/bf561/cache.S
@@ -2,6 +2,7 @@
 #include <asm/linkage.h>
 #include <config.h>
 #include <asm/blackfin.h>
+#include <asm/mach-common/bits/mpu.h>
 
 .text
 .align 2