fusion3: make radio prop and overlay optional

Change-Id: Ice4721f2670159d85de3ec30c666365e205fb063
Revert "remove unused"

This reverts commit a4fa68cf85ac9e419f0ccb0332f8119f09bc7cdd.
Merge branch 'cm-10.1' of https://github.com/CyanogenMod/android_device_sony_fusion3-common into HEAD
remove unused