I2C slave driver for Intel Appololake SOC

[chinmoy ghosh]

Hi ,
I am new to coreboot .I am in need to write a I2c slave driver or Intel
Appololake SOC  .
Here i am able to compile only coreboot/payloads/libpayload but
src/drivers/ is not compiling

- Do i need create slave driver under src/driver and how to compile ?
- Is lpss_i2c.c(./src/soc/intel/common/lpss_i2c.c)   is i2c master driver ?

Waiting for your reply.

Regards
Chinmoy