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

Redwood

configname: CONFIG_REDWOOD

Linux Kernel Configuration
└─>Redwood
In linux kernel since version 2.6.30 (release Date: 2009-06-09)  
This option enables support for the AMCC PPC460SX Redwood board.


depends
CONFIG_44x