CONFIG_ARCH_MXC_AUDMUX_V2 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_MXC_AUDMUX_V2.
Result is shown for kernelversion 6.2.5

CONFIG_ARCH_MXC_AUDMUX_V2 (not configurable)

modulename: audmux-v2.ko

configname: CONFIG_ARCH_MXC_AUDMUX_V2

Linux Kernel Configuration
└─>ARCH_MXC_AUDMUX_V2
In linux kernel since version 2.6.33 (release Date: 2010-02-24)  
source code:
arch/arm/plat-mxc/audmux-v2.c
depends
CONFIG_ARCH_MXC