>  	{ "24c01",	AT24_DEVICE_MAGIC(1024 / 8,	0) },
> +	{ "24cs01",	AT24_DEVICE_MAGIC(128 / 8,

I encoded the size for EEPROMs with "x / 8" originally to make it
visible where the EEPROM name came from, i.e. that is from kilobits not
kilobytes. So, for the serial number I would simply encode the size as
16 and not as (128 / 8), because it has nothing to do with the name. I
can fix this locally if you are okay with the idea?