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

Intel Medfield support (Experimental)

configname: CONFIG_DRM_MEDFIELD

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Intel Medfield support (Experimental)
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Say yes to include support for the Intel Medfield platform.