CONFIG_P2041_RDB is not available for the selected architecture x86.
Result is shown for architecture powerpc
Freescale P2041 RDB
modulename: p2041_rdb.ko
configname: CONFIG_P2041_RDB
Linux Kernel Configuration
└─>Freescale Book-E Machine Type
└─>Freescale P2041 RDB
In linux kernel since version 3.1 (release Date: 2011-10-24)
This option enables support for the P2041 RDB board