default or selected kernelversion does not have config value CONFIG_SND_OMAP_SOC_OVERO.
Result is shown for kernelversion 6.2.5

SoC Audio support for Gumstix Overo and CompuLab CM-T35

modulename: snd-soc-overo.ko

configname: CONFIG_SND_OMAP_SOC_OVERO

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>SoC Audio support for Gumstix Overo and CompuLab CM-T35
In linux kernel since version 2.6.29 (release Date: 2009-03-23)  
Say Y if you want to add support for SoC audio on the
Gumstix Overo or CompuLab CM-T35

source code:
sound/soc//omap/