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

Palm LifeDrive

modulename: palmld.ko

and/or

pxa2xx_palmld.ko

configname: CONFIG_MACH_PALMLD

Linux Kernel Configuration
└─>PXA2xx/PXA3xx-based
└─>Intel PXA2xx/PXA3xx Implementations
└─>Palm LifeDrive
In linux kernel since version 2.6.30 (release Date: 2009-06-09)  
Say Y here if you intend to run this kernel on a Palm LifeDrive
handheld computer.

source code:
/arch/arm/mach-pxa/