CONFIG_PPC_P2020 is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

Freescale P2020

modulename: p2020.ko

configname: CONFIG_PPC_P2020

Linux Kernel Configuration
└─>Freescale Book-E Machine Type
└─>Freescale P2020
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
This option enables generic unified support for any board with the
Freescale P2020 processor.

For example: P2020 DS board, P2020 RDB board, P2020 RDB PC board or
CZ.NIC Turris 1.x boards.

source code: