[TEMP] m8: don't build dotcase yet

Change-Id: Icf3c98882ab76e160d262f6c40867c88c1bf18d1
[TEMP] m8: disable overlays that don't exist yet

Change-Id: I604c4b7c39b07acf62d6e44b785c9a65f6cb56b8

Conflicts:
	overlay/frameworks/base/core/res/res/values/config.xml
	overlay/frameworks/base/packages/SettingsProvider/res/values/defaults.xml
m8: enable TARGET_USE_QCOM_BIONIC_OPTIMIZATION

Change-Id: I2cd81f7ce427c6e69653d4f62773c41d0c85b615
m8: use device-specific sepolicies

Change-Id: Ia46b46e9b0fb7968144b2a6fa852f256cfaea3a4