CONFIG_MACH_DM355_LEOPARD is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_MACH_DM355_LEOPARD.
Result is shown for kernelversion 6.9.9

DM355 Leopard board

modulename: board-dm355-leopard.ko

configname: CONFIG_MACH_DM355_LEOPARD

Linux Kernel Configuration
└─>TI DaVinci
└─>DM355 Leopard board
In linux kernel since version 2.6.31 (release Date: 2009-09-09)  
Configure this option to specify the whether the board used
for development is a DM355 Leopard board.

source code: