CONFIG_SANDPOINT is not available for thedefaultarchitecture x86.
Result is shown for architecture ppc

Motorola-Sandpoint

modulename: pci_auto.ko

and/or

sandpoint.ko

configname: CONFIG_SANDPOINT

Machine Type
└─>Motorola-Sandpoint
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Select SANDPOINT if configuring for a Motorola Sandpoint X3
(any flavor).

source code:
arch/ppc/syslib/

is selected by
CONFIG_MPC10X_BRIDGE