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

CONFIG_DMABOUNCE (not configurable)

modulename: dmabounce.ko

configname: CONFIG_DMABOUNCE

Linux Kernel Configuration
└─>Intel IXP4xx Implementation Options
└─>DMABOUNCE
In linux kernel since version 2.6.12  
source code: