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

CONFIG_PALM_TREO (not configurable)

modulename: palmtreo.ko

configname: CONFIG_PALM_TREO

Linux Kernel Configuration
└─>PXA2xx/PXA3xx-based
└─>Intel PXA2xx/PXA3xx Implementations
└─>PALM_TREO
In linux kernel since version 2.6.33 (release Date: 2010-02-24)  
source code:
arch/arm/mach-pxa/palmtreo.c