CONFIG_DATA_SHIFT_BOOL is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

Set custom data alignment


Linux Kernel Configuration
└─>Kernel options
└─>Set custom data alignment
In linux kernel since version 5.1 (release Date: 2019-05-05)  
This option allows you to set the kernel data alignment. When
RAM is mapped by blocks, the alignment needs to fit the size and
number of possible blocks. The default should be OK for most configs.

Say N here unless you know what you are doing.