CONFIG_MACH_OMAP4_PANDA is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

OMAP4 Panda Board

modulename: board-omap4panda.ko

configname: CONFIG_MACH_OMAP4_PANDA

Linux Kernel Configuration
└─>TI OMAP2/3/4 Specific Features
└─>OMAP4 Panda Board
In linux kernel since version 2.6.36 (release Date: 2010-10-20)  
source code:
/arch/arm/mach-omap2/