Fix min brightness

Change-Id: I9616263525207f8a95750e0a86913cccd4b076c0
Revert "Fix min brightness"

This reverts commit e3b148155f8fa1a617d814c5c79dd2ea912c05c0.
Merge branch 's7300b_cm-10.2' of https://github.com/TeamNostalgia/android_device_jxd_s7300b into s7300b_cm-10.2