Makefile: Use FORCE instead of PHONY for wildcard targets

PHONY does not support wildcards. Make the catch-all target depend on an
unsatisfiable target instead. This was causing problems with targets
that match a file name, like 'linux'.

Test: make linux
Change-Id: I306a94184f143f8f626d08eeb57fa2e561a884b5
1 file changed