contributors: add sony Z2

Change-Id: Ia5e9822ebe103e21e497c25f85cc3add03274fec
Remove me from contributors

Change-Id: If227143d4aadbfcda5b60b080602b2e43a3ec243
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_vendor_cm into android-4.4