Zenfone6: Update Light.c from sm8150 CAf for multi color led

taken https://source.codeaurora.org/quic/la/platform/hardware/qcom/display/tree/liblight?h=LA.UM.7.1.r1-15400-sm8150.0
commit ae5a42e19f9163ae4f0c90110af84ee4f5451c56 (Revert "liblight: Add brightness level extension support")
1 file changed