soc/mediatek/mt8195: Update dram.elf from 1.7.1 to 1.8.1

Move some structures to common folder (CB:61132).

BUG=b:218577927
TEST=dram calibration pass

Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: If0e48b914fa951b4fc07ff1f25c4b4837131508a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/blobs/+/3449237
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: Hung-Te Lin <hungte@chromium.org>
Commit-Queue: Hung-Te Lin <hungte@chromium.org>
3 files changed