CONFIG_MACH_MESON8 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Amlogic Meson8, Meson8b and Meson8m2 SoCs support
configname: CONFIG_MACH_MESON8
Linux Kernel Configuration
└─>Amlogic Meson SoCs
└─>Amlogic Meson8, Meson8b and Meson8m2 SoCs support