Default to erroring when eng/debug tags are used

Some devices opt out of the warning with `BUILD_BROKEN_ENG_DEBUG_TAGS :=
true` still, but the rest have no more warnings left.

Test: build_test in treehugger
Change-Id: I1534a0db006d72c7921a20ab793586ef1c7bdb21
Merged-In: I1534a0db006d72c7921a20ab793586ef1c7bdb21