ARM: dts: armadillo800eva: Add I2C EEPROM for MAC address

Add a device node for the M24C01 I2C EEPROM which serves as external
storage for the Ethernet MAC address.

While at it, restore sort order (by unit address) of the devices on the
I2C bus.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/6d402b289fd20125d9f6f6b2a4f239aa1887daa6.1678375464.git.geert+renesas@glider.be