chromeec: Move keyboard backlight code into Chrome EC directory

Since more boards are starting to use the EC provided keyboard
backlight interface move the code to a common place and allow
it to get included in mainboards.

Change-Id: I3f307bbce1a96cdd1c8224b1e89a63d6fedef738
Signed-off-by: Duncan Laurie <>
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <>
8 files changed