CONFIG_MACH_OMAP3EVM is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

OMAP 3530 EVM board

modulename: board-omap3evm.ko

configname: CONFIG_MACH_OMAP3EVM

Linux Kernel Configuration
└─>OMAP 3530 EVM board
In linux kernel since version 2.6.31 (release Date: 2009-09-09)  
source code:
/arch/arm/mach-omap2/