Previously this was in lightbar.h. ec_commands.h should not require
other header files.
Also make brightness local variable static, so it won't leak outside
lightbar module.
This is simply code cleanup; values themselves have not changed.
BUG=none
TEST=if it builds, it's fine
BRANCH=none (not required in link branch since it's just cleanup)
Change-Id: I5722fb677fcec99e0826e3dfc0b22033781b576f
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/32815
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Yung-Chieh Lo <yjlou@chromium.org>