CONFIG_MIPS_L1_CACHE_SHIFT_7 is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_MIPS_L1_CACHE_SHIFT_7 (not configurable)

configname: CONFIG_MIPS_L1_CACHE_SHIFT_7

Linux Kernel Configuration
└─>MIPS_L1_CACHE_SHIFT_7
In linux kernel since version 3.14 (release Date: 2014-03-30)  
is depended by
CONFIG_SGI_IP28