Re: dtc: Don't include libfdt in global LDFLAGS

So, like, the other day David Gibson mumbled:

Remove the uneccessary LDFLAGS from the top-level makefile.  It only
added libfdt/ to the link path.  dtc doesn't need libfdt at all, and
the testcases which do, already link libfdt.a by explicit path.

Signed-off-by: David Gibson <redacted>

Applied.

jdl