Keep InCallUI in memory (3/3)

Build the dummy InCallUI apk

Change-Id: Idfb7fa760eacc8d6e46d50ce682fb06c0acfc8f4
build: build dialer before InCallUI

this fixes sometimes weird compilation issues

Change-Id: I3f35c5b3d160c3aeea947458b8d3c3e0c9039d26