baytrail: add 316 microcode

The 316 microcode is the newest version. Include that in the build.

BUG=chrome-os-partner:22858
BRANCH=None
TEST=Built and partially booted with microcode loading. Noted 316
     loaded.

Change-Id: Iba01dd58688737ae38bc58a84014ee9526540db1
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/171611
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/4860
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_00000313.h"
+#include "M0C3067_00000316.h"
 };