Synopsys DesignWare Slave

configname: CONFIG_I2C_DESIGNWARE_SLAVE

Linux Kernel Configuration
└─>Device Drivers
└─>I2C support
└─>I2C Hardware Bus support
└─>Synopsys DesignWare Slave
In linux kernel since version 3.10 (release Date: 2013-06-30)  
If you say yes to this option, support will be included for the
Synopsys DesignWare I2C slave adapter.

This is not a standalone module, this module compiles together with
i2c-designware-core.