Add Portwell Neptune machine

Initial introduction of Portwell Neptune family equipped with
Aspeed 2500 BMC SoC.

Tested: Build portwell neptune board and load on the target hardware.
Ensure that BMC boots to console.

Change-Id: I7a97162dfe3031904e27f2de2691e693079c9216
Signed-off-by: Amithash Prasad <amithash@fb.com>
8 files changed
tree: fe3674ba42fb4f45c9013d4c4d1e4f707bb733a4
  1. conf/
  2. meta-intel/
  3. meta-mellanox/
  4. meta-portwell/
  5. meta-quanta/