CONFIG_PPC_PS3 is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

Sony PS3 (incomplete)

modulename: sys-manager-core.ko

configname: CONFIG_PPC_PS3

Linux Kernel Configuration
└─>Sony PS3 (incomplete)
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This option enables support for the Sony PS3 game console
and other platforms using the PS3 hypervisor.
Support for this platform is not yet complete, so
enabling this will not result in a bootable kernel on a
PS3 system.


depends
CONFIG_PPC64
CONFIG_PPC_MULTIPLATFORM or CONFIG_PPC_BOOK3S or CONFIG_CPU_BIG_ENDIAN