CONFIG_AUTO_ZRELADDR is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Auto calculation of the decompressed kernel image address

configname: CONFIG_AUTO_ZRELADDR

Linux Kernel Configuration
└─>Boot options
└─>Auto calculation of the decompressed kernel image address
In linux kernel since version 2.6.36 (release Date: 2010-10-20)  
ZRELADDR is the physical address where the decompressed kernel
image will be placed. If AUTO_ZRELADDR is selected, the address
will be determined at run-time, either by masking the current IP
with 0xf8000000, or, if invalid, from the DTB passed in r2.
This assumes the zImage being placed in the first 128MB from
start of memory.