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

Sony PS3

modulename: sys-manager-core.ko

configname: CONFIG_PPC_PS3

Linux Kernel Configuration
└─>Sony PS3
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. Enabling this
option will allow building otheros.bld, a kernel image suitable
for programming into flash memory, and vmlinux, a kernel image
suitable for loading via kexec.

source code:
drivers/ps3/sys-manager-core.c