CONFIG_MACH_EDB9307 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Support Cirrus Logic EDB9307

modulename: edb9307.ko

configname: CONFIG_MACH_EDB9307

Linux Kernel Configuration
└─>Cirrus EP93xx Implementation Options
└─>Support Cirrus Logic EDB9307
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
Say 'Y' here if you want your kernel to support the Cirrus
Logic EDB9307 Evaluation Board.

source code:
arch/arm/mach-ep93xx/edb9307.c