CONFIG_FSL_ULI1575 is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

CONFIG_FSL_ULI1575 (not configurable)

modulename: fsl_uli1575.ko

configname: CONFIG_FSL_ULI1575

Linux Kernel Configuration
└─>Platform support
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
Supports for the ULI1575 PCIe south bridge that exists on some
Freescale reference boards. The boards all use the ULI in pretty
much the same way.

source code: