evita: move hardware button config to device overlay

Requires: http://review.cyanogenmod.org/51680

Change-Id: I2c60291f844535e679cdbd964a94b34ca1289f96
evita: update storage configuration for 4.4

Change-Id: Ia3b63a57374bf2fc2188030fce289a7d05354e51
evita: enable LTE mobile network settings

Change-Id: Iaa764ba098cd97c3e3a7add22b7dab9a79735cb9
evita: remove legacy vold flag

Change-Id: I8330744714d901eb1ade444efc87b6db7c681c37