default or selected kernelversion does not have config value CONFIG_SND_PXA2XX_SOC_Z2.
Result is shown for kernelversion 6.9.9
SoC Audio support for Zipit Z2
modulename: snd-soc-z2.ko
configname: CONFIG_SND_PXA2XX_SOC_Z2
Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>SoC Audio support for Zipit Z2
In linux kernel since version 2.6.35 (release Date: 2010-08-01)
Say Y if you want to add support for SoC audio on Zipit Z2.