CONFIG_ARCH_VEXPRESS_DCSCB is not available for the default architecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_VEXPRESS_DCSCB.
Result is shown for kernelversion 6.0-rc7

Dual Cluster System Control Block (DCSCB) support

modulename: dcscb.ko

Linux Kernel Configuration
└─> ARM Ltd. Versatile Express family
└─> Dual Cluster System Control Block (DCSCB) support

Support for the Dual Cluster System Configuration Block (DCSCB).
This is needed to provide CPU and cluster power management
on RTSM implementing big.LITTLE.

source code: