default or selected kernelversion does not have config value CONFIG_I2C_PMCMSP.
Result is shown for kernelversion 6.9.9

PMC MSP I2C TWI Controller

modulename: i2c-pmcmsp.ko

configname: CONFIG_I2C_PMCMSP

Linux Kernel Configuration
└─>Device Drivers
└─>I2C support
└─>I2C Hardware Bus support
└─>PMC MSP I2C TWI Controller
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
This driver supports the PMC TWI controller on MSP devices.

This driver can also be built as module. If so, the module
will be called i2c-pmcmsp.

source code: