minigbm: add amlogic backend

Add dumb amlogic backend based on udl.

BUG=none
TEST=emerge-falco minigbm

Change-Id: I435d0924d8206b4058b76bf403175f9b2cbb1291
Reviewed-on: https://chromium-review.googlesource.com/861865
Commit-Ready: Gurchetan Singh <[email protected]>
Tested-by: Gurchetan Singh <[email protected]>
Reviewed-by: Stéphane Marchesin <[email protected]>
Reviewed-by: Sergey Volk <[email protected]>
3 files changed