CONFIG_SOC_SAM_V7 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_SOC_SAM_V7 (not configurable)

configname: CONFIG_SOC_SAM_V7

Linux Kernel Configuration
└─>Atmel SoCs
└─>SOC_SAM_V7
In linux kernel since version 3.1 (release Date: 2011-10-24)  

is depended by
CONFIG_SOC_SAMA5