Keymap: Wanleg layout updates (#4550)

Keymap: Wanleg layout updates (#4550)

* config fixes (including for issue #3678)

* put back audio

* jj40 backlighting setup

* jj40 backlighting setup

* rules.mk fix

* jj40 backlighting settings

* iris setup

* iris setup

* iris setup

* iris setup

* iris setup - onehand

* remove commented-out section

* edits due to #4403

* xd75 testing

* fix 5x15 layout issues with 5x5 bluetooth & xd75

* commenting out unused placeholders

* change iris to more wanleg-like 4x12 layout

* formatting changes

* onehand layout cleanup/fix

* revert temp change