default or selected kernelversion does not have config value CONFIG_FB_PUV3_UNIGFX.
Result is shown for kernelversion 6.9.9

PKUnity v3 Unigfx framebuffer support

modulename: fb-puv3.ko

configname: CONFIG_FB_PUV3_UNIGFX

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Frame buffer Devices
└─>Support for frame buffer devices
└─>PKUnity v3 Unigfx framebuffer support
In linux kernel since version 2.6.39 (release Date: 2011-05-18)  
Choose this option if you want to use the Unigfx device as a
framebuffer device. Without the support of PCI & AGP.

source code: