Verity forward error correction support

configname: CONFIG_DM_VERITY_FEC

Linux Kernel Configuration
└─>Device Drivers
└─>Multiple devices driver support (RAID and LVM)
└─>Verity forward error correction support
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Add forward error correction support to dm-verity. This option
makes it possible to use pre-generated error correction data to
recover from corrupted blocks.

If unsure, say N.