CONFIG_MACH_MICRO9M is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Support Contec Micro9-Mid

configname: CONFIG_MACH_MICRO9M

Linux Kernel Configuration
└─>EP93xx-based
└─>Cirrus EP93xx Implementation Options
└─>Support Contec Micro9-Mid
In linux kernel since version 2.6.21 (release Date: 2007-04-25)  
Say 'Y' here if you want your kernel to support the
Contec Micro9-Mid board.