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

Raumfeld Controller

modulename: raumfeld.ko

configname: CONFIG_MACH_RAUMFELD_RC

Linux Kernel Configuration
└─>Intel PXA2xx/PXA3xx Implementations
└─>Raumfeld Controller
In linux kernel since version 2.6.34 (release Date: 2010-05-16)  
source code:
arch/arm/mach-pxa/raumfeld.c

depends
CONFIG_ARCH_PXA