Undoes
commit 0fd6c92c20 ("ANDROID: HACK: Makefile: whitelist CFLAGS to
reenable Werror")
now that we've backported all necessary fixes from upstream. Rather than
have one big warning-whitelist that blankets the kernel, push the
remaining warnings down into the deepest subdirs for out of tree code.
We will further work to fix out of tree warnings in b/37513383, and
b/62058353.
Bug: 37513383
Fixes: 62057517
Bug: 62058353
Change-Id: Ic4783357462ff4c6fa0ec69a03e9c57bca1b8fb1
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>