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

CONFIG_IMX_HAVE_PLATFORM_MXC_NAND (not configurable)

modulename: platform-mxc_nand.ko

configname: CONFIG_IMX_HAVE_PLATFORM_MXC_NAND

Linux Kernel Configuration
└─>IMX_HAVE_PLATFORM_MXC_NAND
In linux kernel since version 2.6.36 (release Date: 2010-10-20)  
source code:
arch/arm/mach-imx/devices/platform-mxc_nand.c