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

Katmai

configname: CONFIG_KATMAI

Linux Kernel Configuration
└─>Katmai
In linux kernel since version 2.6.25 (release Date: 2008-04-16)  
This option enables support for the AMCC PPC440SPe evaluation board.


depends
CONFIG_44x