CONFIG_HAVE_AT91_AUDIO_PLL is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_HAVE_AT91_AUDIO_PLL (not configurable)

modulename: clk-audio-pll.ko

configname: CONFIG_HAVE_AT91_AUDIO_PLL

Linux Kernel Configuration
└─>Atmel SoCs
└─>HAVE_AT91_AUDIO_PLL
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
drivers/clk/at91/clk-audio-pll.c

is depended by
CONFIG_SOC_SAMA5D2