CONFIG_AB8500_I2C_CORE is not available for the default architecture x86.
Result is shown for architecture blackfin
default or selected kernelversion does not have config value CONFIG_AB8500_I2C_CORE.
Result is shown for kernelversion 3.5.7

AB8500 register access via PRCMU I2C

configname: CONFIG_AB8500_I2C_CORE

Linux Kernel Configuration
└─> Device Drivers
└─> Multifunction device drivers
└─> AB8500 register access via PRCMU I2C

This enables register access to the AB8500 chip via PRCMU I2C.
The AB8500 chip can be accessed via SPI or I2C. On DB8500 hardware
the I2C bus is connected to the Power Reset
and Mangagement Unit, PRCMU.