ANDROID: Disable kthread delayed work fp check in CFI builds

With non-canonical CFI, LLVM generates jump table entries for external
symbols in modules and as a result, a function pointer passed from a
module to the core kernel will have a different address.

Disable the warning for now.

Bug: 145210207
Signed-off-by: Daniel Mentz <danielmentz@google.com>
Change-Id: I576a07206a465902773481e51a84529f0ac2e84b