CONFIG_MACH_JZ4770 is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_MACH_JZ4770 (not configurable)

configname: CONFIG_MACH_JZ4770

Linux Kernel Configuration
└─>MACH_JZ4770
In linux kernel since version 4.2 (release Date: 2015-08-30)