Add initial version of device tree for Facebook Elbert (AST2600) BMC.
Elbert is Facebook's next generation switch platform with an AST2600 BMC
integrated for health monitoring purpose.
Signed-off-by: Tao Ren <rentao.bupt@gmail.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20210805222818.8391-6-rentao.bupt@gmail.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
