default or selected kernelversion does not have config value CONFIG_PHONET_PIPECTRLR.
Result is shown for kernelversion 5.4.69

Phonet Pipe Controller (EXPERIMENTAL)

configname: CONFIG_PHONET_PIPECTRLR

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Phonet Pipe Controller (EXPERIMENTAL)
In linux kernel since version 2.6.37 (release Date: 2011-01-04)  
The Pipe Controller implementation in Phonet stack to support Pipe
data with Nokia Slim modems like WG2.5 used on ST-Ericsson U8500
platform.

This option is incompatible with older Nokia modems.
Say N here unless you really know what you are doing.

depends
CONFIG_EXPERIMENTAL
CONFIG_NET
CONFIG_PHONET