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

PXA based Toshiba e-series PDAs

modulename: eseries.ko

configname: CONFIG_ARCH_PXA_ESERIES

Linux Kernel Configuration
└─>PXA2xx/PXA3xx-based
└─>Intel PXA2xx/PXA3xx Implementations
└─>PXA based Toshiba e-series PDAs
In linux kernel since version 2.6.25 (release Date: 2008-04-16)  
source code: