Merge "DRM HAL README.md" am: d4a24d77bb am: 45110121d4

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2395093

Change-Id: I628ddc200ac9d5ae2e6ad016f2d69b1e6dfc2526
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>