Revert "Makefile: Prioritize external dtb if defined"

This is causing unexpected size growth in the normal case and is likely
to have been mis-applied by myself.

This reverts commit 3eaf6dcd9362b56e3217559401287dd8fa35b5b2.

Signed-off-by: Tom Rini <trini@konsulko.com>
1 file changed