ARM: dts: aspeed: ast2600-evb: Update I2C devices

The AST2600A3 EVB has the following I2C devices:

 - ADT7490 at 0x2e
 - EEPROM at 0xa0
 - LM75 at 0x9a

The bus these devices appear on can be configured by jumpers. The device
tree is configured with the buses given by the default jumper settings.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Ryan Chen <ryan_chen@aspeedtech.com>
Link: https://lore.kernel.org/r/20220623094717.3873328-1-joel@jms.id.au


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