CONFIG_MACH_OMAP_4430SDP is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

OMAP 4430 SDP board

modulename: board-4430sdp.ko

configname: CONFIG_MACH_OMAP_4430SDP

Linux Kernel Configuration
└─>TI OMAP2/3/4 Specific Features
└─>OMAP 4430 SDP board
In linux kernel since version 2.6.31 (release Date: 2009-09-09)  
source code:
/arch/arm/mach-omap2/