baytrail: add C0 microcode update

Include C0 microcode drop.

BUG=None
BRANCH=rambi,squawks
TEST=Built. Booted B3 part.

Change-Id: If454658235cd5a7b8640de0b3fa12dccddb0e9f6
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/182080
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: http://review.coreboot.org/5041
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

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

@@ -1,3 +1,4 @@
 unsigned microcode[] = {
 #include "M0C3067_0000031E.h"
+#include "M0C3068_00000808.h"
 };