c128 keymaps: Update to the new keymap standard
Compile of headless ui x128 fails
Just submitted r40268, which should fix this.
headless: Add dummy video_arch_get_active_chip function
sdl1: Add implementation of video_arch_get_active_chip
Should be fixed in r40172 -- please re-test.
Should be fixed in r1069 -- please re-test.