CONFIG_ARCH_SYNQUACER is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64

Socionext SynQuacer SoC Family

modulename: irq-sni-exiu.ko

configname: CONFIG_ARCH_SYNQUACER

Linux Kernel Configuration
└─>Platform selection
└─>Socionext SynQuacer SoC Family
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
drivers/irqchip/irq-sni-exiu.c