default or selected kernelversion does not have config value CONFIG_MFD_88PM8607.
Result is shown for kernelversion 5.4.194

Support Marvell 88PM8607

modulename: 88pm8607.ko

configname: CONFIG_MFD_88PM8607

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>I2C support
└─>Support Marvell 88PM8607
In linux kernel since version 2.6.33 (release Date: 2010-02-24)  
This supports for Marvell 88PM8607 Power Management IC. This includes
the I2C driver and the core APIs _only_, you have to select
individual components like voltage regulators, RTC and
battery-charger under the corresponding menus.

source code: