soc/mediatek/mt8192: Add 4266Mbps flag for dpm & dram blob

BUG=b:173653085
TEST=Stress pass

Signed-off-by: Xi Chen <xixi.chen@mediatek.com>
Change-Id: Ia565eab885033a0398e2f988d56a73b90f6b1323
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/blobs/+/2517305
Reviewed-by: Yu-Ping Wu <yupingso@chromium.org>
Commit-Queue: Hung-Te Lin <hungte@chromium.org>
Tested-by: Hung-Te Lin <hungte@chromium.org>
5 files changed