CHERRY-PICK: Wolf: set brightness lowest level PWM duty to 5%

set_min_visible_level to 47 (i.e. 47*100/937 ~= 5)

BUG=chrome-os-partner:30757
TEST=none

Change-Id: Ic1e99ba67867c4b01e504d3d9111ea4c2944a14e
Original-Change-Id: Ia0f678ac36f8118025faec549b8e2a464aacaba1
Reviewed-on: https://chromium-review.googlesource.com/210370
Reviewed-by: Daniel Erat <derat@chromium.org>
Commit-Queue: Mohammed Habibulla <moch@google.com>
Tested-by: Mohammed Habibulla <moch@google.com>
Reviewed-on: https://chromium-review.googlesource.com/210546
4 files changed