zero: set optimized compiler-options
zero: set optimized compiler-options

Change-Id: I45179de8f88ecc3389677aa33bf95860cce68eda

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