CONFIG_CPU_HAS_FPUV2 is not available for the selected architecture x86.
Result is shown for architecture csky

CONFIG_CPU_HAS_FPUV2 (not configurable)

configname: CONFIG_CPU_HAS_FPUV2

Linux Kernel Configuration
└─>CPU_HAS_FPUV2
In linux kernel since version 4.2 (release Date: 2015-08-30)