soc/mediatek/mt8186: Add MT8186 basic files

Add README.md and license.txt.

Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: Ic6198353b1f7cca683875339a5fc4378a783d7a2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/blobs/+/3274773
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.corp-partner.google.com>
Reviewed-by: Yu-Ping Wu <yupingso@chromium.org>
Tested-by: Rex-BC Chen <rex-bc.chen@mediatek.corp-partner.google.com>
Commit-Queue: Yu-Ping Wu <yupingso@chromium.org>
2 files changed