CONFIG_SA1100_SIMPAD is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Simpad

modulename: simpad.ko

configname: CONFIG_SA1100_SIMPAD

Linux Kernel Configuration
└─>SA11x0 Implementations
└─>Simpad
In linux kernel since version 2.6.12  
The SIEMENS webpad SIMpad is based on the StrongARM 1110. There
are two different versions CL4 and SL4. CL4 has 32MB RAM and 16MB
FLASH. The SL4 version got 64 MB RAM and 32 MB FLASH and a
PCMCIA-Slot. The version for the Germany Telecom (DTAG) is the same
like CL4 in additional it has a PCMCIA-Slot. For more information
visit <http://www.usa.siemens.com/> or <http://www.siemens.ch/>.

source code: