CONFIG_AGP_PARISC is not available for thedefaultarchitecture x86.
Result is shown for architecture 64BIT

HP Quicksilver AGP support

modulename: parisc-agp.ko


Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>/dev/agpgart (AGP Support)
└─>HP Quicksilver AGP support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This option gives you AGP GART support for the HP Quicksilver
AGP bus adapter on HP PA-RISC machines (Ok, just on the C8000

source code: