default or selected kernelversion does not have config value CONFIG_I2C_SIRF.
Result is shown for kernelversion 6.9.5

CSR SiRFprimaII I2C interface

modulename: i2c-sirf.ko

configname: CONFIG_I2C_SIRF

Linux Kernel Configuration
└─>Device Drivers
└─>I2C support
└─>I2C Hardware Bus support
└─>CSR SiRFprimaII I2C interface
In linux kernel since version 3.1 (release Date: 2011-10-24)  
If you say yes to this option, support will be included for the
CSR SiRFprimaII I2C interface.

This driver can also be built as a module. If so, the module
will be called i2c-sirf.

source code: