ARM: dts: aspeed: rainier: Add additional processor CFAMs

Rainier has two dual-chip modules and therefore four CFAMs with their
associated engines. Add these to the devicetree with the i2c busses
that have devices on them.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20210329150020.13632-5-eajames@linux.ibm.com


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