UPSTREAM: soc/mediatek/mt8192: Update DRAM blob to 1.6.2

This fixes memory training for DRAM Micron 8GB.

BUG=b:186363844
TEST=Hayato boots

Change-Id: I29f849bea76b4f5b0f1d8eac0b8c53c5cc3633ec
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/blobs/+/2895363
Tested-by: Yu-Ping Wu <yupingso@chromium.org>
Auto-Submit: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Commit-Queue: Hung-Te Lin <hungte@chromium.org>
4 files changed