soc/mediatek/mt8183: Update DRAM calibration blob to 12573.136

A new release of dram.elf built from Chrome OS 12573.136.0,
improve 8GB stability.

BUG=None
BRANCH=kukui
TEST=emerge-kukui coreboot chromeos-bootimage # boots properly

Cq-Depend: chromium:2437456
Change-Id: Ie7baec46be614fb8bb942d49468de2d0ccd9e761
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/blobs/+/2437752
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Commit-Queue: Hung-Te Lin <hungte@chromium.org>
Tested-by: Hung-Te Lin <hungte@chromium.org>
Auto-Submit: Hung-Te Lin <hungte@chromium.org>
(cherry picked from commit efa1448f6164f6e676cb181316143747107cd97a)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/blobs/+/2505295
Tested-by: Yu-Ping Wu <yupingso@chromium.org>
Auto-Submit: Yu-Ping Wu <yupingso@chromium.org>
Commit-Queue: Yu-Ping Wu <yupingso@chromium.org>
diff --git a/soc/mediatek/mt8183/dram.elf b/soc/mediatek/mt8183/dram.elf
index 8edf9b2..fbd35c6 100644
--- a/soc/mediatek/mt8183/dram.elf
+++ b/soc/mediatek/mt8183/dram.elf
Binary files differ
diff --git a/soc/mediatek/mt8183/dram_release_notes.txt b/soc/mediatek/mt8183/dram_release_notes.txt
index b0803bd..f1f3601 100644
--- a/soc/mediatek/mt8183/dram_release_notes.txt
+++ b/soc/mediatek/mt8183/dram_release_notes.txt
@@ -1,3 +1,10 @@
+# 2020.09.29
+1. Build from Chrome OS 12573.136.0, incompatible with previous versions.
+   Header version = 4.
+2. Include changes:
+
+CL:*3222235 dramc: MT8183: Enable CA perbit mechanism
+
 # 2020.08.12
 
 1. Build from Chrome OS 12573.132.0, incompatible with previous versions.