binman: Correct some import statements

Some of these were not converted when binman moved to use absolute paths.
Fix them.

Also drop the import of 'test' which is a directory, not a module.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/binman/control.py b/tools/binman/control.py
index 69c36ed..60e89d3 100644
--- a/tools/binman/control.py
+++ b/tools/binman/control.py
@@ -123,7 +123,7 @@
         data extracted from the entry
     """
     global Image
-    from image import Image
+    from binman.image import Image
 
     image = Image.FromFile(image_fname)
     entry = image.FindEntryPath(entry_path)
@@ -496,7 +496,7 @@
         return 0
 
     # Put these here so that we can import this module without libfdt
-    from image import Image
+    from binman.image import Image
     from binman import state
 
     if args.cmd in ['ls', 'extract', 'replace']:
diff --git a/tools/binman/ftest.py b/tools/binman/ftest.py
index fedcc1ad..5f650b5 100644
--- a/tools/binman/ftest.py
+++ b/tools/binman/ftest.py
@@ -29,7 +29,7 @@
 from dtoc import fdt_util
 from binman.etype import fdtmap
 from binman.etype import image_header
-from image import Image
+from binman.image import Image
 from patman import command
 from patman import test_util
 from patman import tools
diff --git a/tools/binman/image_test.py b/tools/binman/image_test.py
index f85c3c5..e351fa8 100644
--- a/tools/binman/image_test.py
+++ b/tools/binman/image_test.py
@@ -6,7 +6,7 @@
 
 import unittest
 
-from image import Image
+from binman.image import Image
 from patman.test_util import capture_sys_output
 
 class TestImage(unittest.TestCase):
diff --git a/tools/binman/main.py b/tools/binman/main.py
index 3e463b0..8c1e478 100755
--- a/tools/binman/main.py
+++ b/tools/binman/main.py
@@ -61,7 +61,6 @@
     from binman import fdt_test
     from binman import ftest
     from binman import image_test
-    from binman import test
     import doctest
 
     result = unittest.TestResult()