[Edgecore][AS9947-36XKB] Add platform as9947-36xkb

[WillyLiu-EC]

CPU sub-system COM-e Module Ice Lake CPU : Ice Lake-D (D-1734NT 8C) DDR4 SDRAM : 32GB x 2 with ECC (SO-DIMM) DDR4 NOR Flash (Boot) : 64MB NOR Flash (Backup) : 64MB M.2 2280 SSD : 480G NVMe SSD

Management UART RS232 console port(RJ45 x1 port) Out-Band Management Ethernet port (RJ45 x 1 port)

MAC Broadcom J2C+ (BCM88851), 1 pcs , 14.4 Tb/s integrated packet processor

Ethernet Ports 12 x QSFP-DD ports & 24 x QSFP28 ports

Timing ports 4 x SFP+ ports

Power Supply 12V/2000W PSU back to front airflow (DC to AC), 1+1 redundant load-sharing, hot-swappable

Cooling 4 FAN-tray modules with 4 pcs of 80mm x 80mm x 80mm 12V hot-swappable fans.

BMC Module AST2600