CONFIG_C293_PCIE is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

Freescale C293PCIE

modulename: c293pcie.ko

configname: CONFIG_C293_PCIE

Linux Kernel Configuration
└─>Freescale Book-E Machine Type
└─>Freescale C293PCIE
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This option enables support for the C293PCIE board

source code: