Kernel config: this work should go hand in hand with metadata changes to
enable configuration validation. Will also require conversations with
users to better understand the tasks we need to enable, and designers to
become somehow familiar with the contents of menuconfig. This a big piece
of work, and we do not think we can deliver it in 1.9

A kernel KConfig tool is a huge undertaking. There is an Eclipse solution that Wind River is sharing, and that would a better way forward.