arm64: dts: renesas: falcon: Add I2C EEPROM nodes

Add device nodes for the I2C EEPROMs on the Falcon CPU and BreakOut
boards.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20210304153257.4059277-2-geert+renesas@glider.be