Re: [dtc] Bugfix for CHECK_HAVE_WARN_PHANDLE()

So, like, the other day David Gibson mumbled:

At present, the tree checking code in dtc will die with an assertion
failure if given a tree which has the invalid value 0 or -1 in a
property which should contain a phandle.  This patch fixes the check
to die more gracefully with an error message indicating the invalid
phandle value.

Signed-off-by: David Gibson <redacted>

Applied.

Thanks,
jdl