CONFIG_MPC832x_RDB is not available for the selected architecture x86.
Result is shown for architecture powerpc
Freescale MPC832x RDB
modulename: mpc832x_rdb.ko
configname: CONFIG_MPC832x_RDB
Machine Type
└─>Freescale MPC832x RDB
In linux kernel since version 2.6.22 (release Date: 2007-07-08)
This option enables support for the MPC8323 RDB board.