d2: use commonized defconfig

Change-Id: I73943ecef48bce13242e4aaeee62b86669c04bdb
d2-common: only build selinux in kernel if we want it

Change-Id: I7df8ebe41321f467a4419cbef65fbd9942d16543
Merge branch 'cm-10.1' of github.com:CyanogenMod/android_device_samsung_d2-common into cm-10.1