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

CONFIG_PPC_INDIRECT_PCI_BE (not configurable)

configname: CONFIG_PPC_INDIRECT_PCI_BE

Linux Kernel Configuration
└─>PPC_INDIRECT_PCI_BE
In linux kernel since version 2.6.12  
depends
CONFIG_85xx

is depended by
CONFIG_MPC8641