CONFIG_S3C_DEV_I2C7 is not available for the selected architecture x86.
Result is shown for architecture arm
CONFIG_S3C_DEV_I2C7 (not configurable)
configname: CONFIG_S3C_DEV_I2C7
Linux Kernel Configuration
└─>S3C_DEV_I2C7
In linux kernel since version 2.6.37 (release Date: 2011-01-04)
Compile in platform device definition for I2C controller 7