hammerhead: hasHighBrightness flag to true

Change-Id: I705a13444988c3a7d701139ad9ec91f2a3bd2204
Merge "hammerhead: hasHighBrightness flag to true" into cm-11.0
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_lge_hammerhead into cd-4.4