CONFIG_APM8018X is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

APM8018X

configname: CONFIG_APM8018X

Linux Kernel Configuration
└─>APM8018X
In linux kernel since version 3.1 (release Date: 2011-10-24)  
This option enables support for the AppliedMicro APM8018X evaluation
board.