broadwell: Add 306D4 microcode 0x19

Latest released microcode for Broadwell F0 stepping.

BUG=chrome-os-partner:28234
BRANCH=broadwell
TEST=build and boot on samus

Change-Id: I005ddcc56a68525f61bb90fd2f48e854e6848a7a
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/239957
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
3 files changed