CONFIG_HAVE_AT91_I2S_MUX_CLK is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
CONFIG_HAVE_AT91_I2S_MUX_CLK (not configurable)
modulename: clk-i2s-mux.ko
configname: CONFIG_HAVE_AT91_I2S_MUX_CLK
Linux Kernel Configuration
└─>AT91/Microchip SoCs
└─>HAVE_AT91_I2S_MUX_CLK