baytrail: update microcode to version 313

B2 and B3 steppings are now bumped to version 313.

BUG=chrome-os-partner:22858
BRANCH=None
TEST=Built.

Change-Id: I09ae5110b66c725e959e95fc15bc85ccf371495d
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/170425
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/4848
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/soc/intel/baytrail/microcode/microcode_blob.c

@@ -1,3 +1,3 @@
 unsigned microcode[] = {
-#include "M0C3067_0000030f.h"
+#include "M0C3067_00000313.h"
 };