ARM: dts: aspeed: Add P10 FSI descriptions

These will be used by BMCs attached to a IBM Power10 server CPU.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20230809074921.116987-2-joel@jms.id.au


Signed-off-by: Joel Stanley <joel@jms.id.au>