binman: Ignore hash*, signature* nodes in sections

Switch to str.startswith for matching like the FIT etype does since the
current version doesn't ignore 'hash-1', 'hash-2', etc.

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

tools/binman/ftest.py

@@ -3477,5 +3477,11 @@ class TestFunctional(unittest.TestCase):
         fnode = dtb.GetNode('/images/kernel')
         self.assertNotIn('data', fnode.props)
 
+    def testSectionIgnoreHashSignature(self):
+        """Test that sections ignore hash, signature nodes for its data"""
+        data = self._DoReadFile('165_section_ignore_hash_signature.dts')
+        expected = (U_BOOT_DATA + U_BOOT_DATA)
+        self.assertEqual(expected, data)
+
 if __name__ == "__main__":
     unittest.main()