CONFIG_S3C_DEV_HSMMC is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
CONFIG_S3C_DEV_HSMMC (not configurable)
configname: CONFIG_S3C_DEV_HSMMC
Linux Kernel Configuration
└─>S3C_DEV_HSMMC
In linux kernel since version 2.6.29 (release Date: 2009-03-23)
Compile in platform device definitions for HSMMC code