d8aa39d1c3
These still default to warnings, but if a board decides to set BOARD_BROKEN_PHONY_TARGETS := false, they'll turn into errors. More likely I'll just be marking the broken targets as broken, then switching the logic here to be like the dup rules warnings/errors. Test: On a build with warnings, try <missing>, "false", and "true" Change-Id: I041e1ff4618c4114ec43015b6c0ae1b49b36b6f8