mako: adjust first brightness range's max value

Bug 7128723

The light sensor can report below 10 in dim and even well-lit rooms. In
those situations, the first brightness setting is too dim. Reduce the
first range's max value from 10 to 1, so that the screen is brighter at
any sign of light.

Change-Id: Ied5a2f76bd20090880f664af2976144eb7aeb8d6
1 file changed