binman: Move to absolute imports

At present binman sets the python path on startup so that it can access
the libraries it needs. If we convert to use absolute imports this is not
necessary.

Move binman to use absolute imports. This enables removable of the path
adjusting in Entry also.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/binman/fdt_test.py b/tools/binman/fdt_test.py
index ac6f910..a9ab04e 100644
--- a/tools/binman/fdt_test.py
+++ b/tools/binman/fdt_test.py
@@ -9,9 +9,9 @@
 import tempfile
 import unittest
 
-import fdt
-from fdt import FdtScan
-import fdt_util
+from dtoc import fdt
+from dtoc import fdt_util
+from dtoc.fdt import FdtScan
 import tools
 
 class TestFdt(unittest.TestCase):