CONFIG_CPU_MIPS32_R5 is not available for thedefaultarchitecture x86.
Result is shown for architecture mips
MIPS32 Release 5
configname: CONFIG_CPU_MIPS32_R5
CPU type
└─>MIPS32 Release 5
In linux kernel since version 4.14.326 (release Date: 2023-09-23)
Choose this option to build a kernel for release 5 or later of the
MIPS32 architecture. New MIPS processors, starting with the Warrior
family, are based on a MIPS32r5 processor. If you own an older
processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
MIPS32 architecture. New MIPS processors, starting with the Warrior
family, are based on a MIPS32r5 processor. If you own an older
processor, you probably need to select MIPS32r1 or MIPS32r2 instead.