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 by masking the current IP with
0xf8000000. This assumes the zImage being placed in the first 128MB
from start of memory.