default or selected kernelversion does not have config value CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS.
Result is shown for kernelversion 6.9-rc1

CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS (not configurable)

configname: CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS

Linux Kernel Configuration
└─>General architecture-dependent options
└─>HAVE_ARCH_MMAP_RND_COMPAT_BITS
In linux kernel since version 4.1 (release Date: 2015-06-21)  
An arch should select this symbol if it supports running applications
in compatibility mode, supports setting a variable number of bits for
use in establishing the base address for mmap allocations, has MMU
enabled and provides values for both:
- ARCH_MMAP_RND_COMPAT_BITS_MIN
- ARCH_MMAP_RND_COMPAT_BITS_MAX