CONFIG_MACH_EDB9307A is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Support Cirrus Logic EDB9307A

configname: CONFIG_MACH_EDB9307A

Linux Kernel Configuration
└─>Cirrus EP93xx Implementation Options
└─>Support Cirrus Logic EDB9307A
In linux kernel since version 2.6.29 (release Date: 2009-03-23)  
Say 'Y' here if you want your kernel to support the Cirrus
Logic EDB9307A Evaluation Board.