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
0677e64655