ARM: dts: aspeed: minerva: change the i2c mux number for FCBs

Change the i2c mux channel to match the correct fan board location.

Signed-off-by: Yang Chen <yangchen.openbmc@gmail.com>
Link: https://patch.msgid.link/20240924140215.2484170-3-yangchen.openbmc@gmail.com


Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>