CONFIG_SA1100_JORNADA720 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

HP Jornada 720

modulename: jornada720.ko

configname: CONFIG_SA1100_JORNADA720

Linux Kernel Configuration
└─>SA11x0 Implementations
└─>HP Jornada 720
In linux kernel since version 2.6.12  
Say Y here if you want to build a kernel for the HP Jornada 720
handheld computer. See
<http://h10025.www1.hp.com/ewfrf/wc/product?product=61677&cc=us&lc=en&dlc=en&product=61677#>

source code: