meta-quanta: gbs: add GBS system initial script

system initial script:

1. get MB/HSBP/Fan boards REV/SKU ID
2. read FRUs on PE slots
3. reset PHY
4. SATA power enable
5. check HSBP/Fan board cables present
5. verfiy BIOS image
6. Host power on
7. gpio persistence

Signed-off-by: George Hung <george.hung@quantatw.com>
Change-Id: Ia28cbf93b04d09f519a0fa5fe8f8bda0b2eed347
4 files changed