CONFIG_BF527_NAND_D_PORTH is not available for thedefaultarchitecture x86.
Result is shown for architecture blackfin
default or selected kernelversion does not have config value CONFIG_BF527_NAND_D_PORTH.
Result is shown for kernelversion 6.7-rc3

PORT H

configname: CONFIG_BF527_NAND_D_PORTH

NAND (NFC) Data
└─>PORT H
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
PORT H