CONFIG_EXYNOS4_SDHCI_CH0_8BIT is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_EXYNOS4_SDHCI_CH0_8BIT.
Result is shown for kernelversion 6.2.5

Channel 0 with 8-bit bus

configname: CONFIG_EXYNOS4_SDHCI_CH0_8BIT

Linux Kernel Configuration
└─>Use 8-bit bus width
└─>Channel 0 with 8-bit bus
In linux kernel since version 2.6.39 (release Date: 2011-05-18)  
Support HSMMC Channel 0 8-bit bus.
If selected, Channel 1 is disabled.

depends
CONFIG_ARCH_EXYNOS4 or &