CONFIG_MACH_EDB93XX is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_MACH_EDB93XX (not configurable)

modulename: edb93xx.ko

configname: CONFIG_MACH_EDB93XX

Linux Kernel Configuration
└─>Cirrus EP93xx Implementation Options
└─>MACH_EDB93XX
In linux kernel since version 2.6.31 (release Date: 2009-09-09)  
source code:
arch/arm/mach-ep93xx/edb93xx.c