CONFIG_PXA_V7_MACH_AUTO is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_PXA_V7_MACH_AUTO.
Result is shown for kernelversion 5.3.7

CONFIG_PXA_V7_MACH_AUTO (not configurable)

configname: CONFIG_PXA_V7_MACH_AUTO

Linux Kernel Configuration
└─>Intel PXA2xx/PXA3xx Implementations
└─>PXA_V7_MACH_AUTO
In linux kernel since version 3.3 (release Date: 2012-03-18)