CONFIG_POWERTV is not available for thedefaultarchitecture x86.
Result is shown for architecture mips
default or selected kernelversion does not have config value CONFIG_POWERTV.
Result is shown for kernelversion 6.2.5

Cisco PowerTV

configname: CONFIG_POWERTV

System type
└─>Cisco PowerTV
In linux kernel since version 2.6.33 (release Date: 2010-02-24)  
This enables support for the Cisco PowerTV Platform.