In order to be able to share code across different poppy variants,
provide the concept of baseboard and variants. New directory layout:
variants/baseboard - code
variants/baseboard/include/baseboard - headers
variants/poppy - code
variants/poppy/include/variant - headers
New boards would then add themselves under their board name within
"variants" directory.
This is purely an organizational change.
BUG=b:37375693
Change-Id: If6c1c5f479cfffe768abf27495d379744104e2dc
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/19322
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
