zero: allow private aspects to inject custom product configs
zero: allow private aspects to inject custom product configs

Change-Id: Idee31e151e79dcc1e63bb121a87caa9a6b79c3d8

TeamNexus/android_device_samsung_zero-common,TeamNexus/android_device_samsung_zero-common,TeamNexus/android_device_samsung_zero-common,TeamNexus/android_device_samsung_zero-common,TeamNexus/android_device_samsung_zero-common