patman: Convert camel case in test_util.py

Convert this file to snake case and update all files which use it.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/binman/main.py b/tools/binman/main.py
index 03462e7..ab25b48 100755
--- a/tools/binman/main.py
+++ b/tools/binman/main.py
@@ -84,14 +84,14 @@
 
     # Run the entry tests first ,since these need to be the first to import the
     # 'entry' module.
-    test_util.RunTestSuites(
+    test_util.run_test_suites(
         result, debug, verbosity, test_preserve_dirs, processes, test_name,
         toolpath,
         [bintool_test.TestBintool, entry_test.TestEntry, ftest.TestFunctional,
          fdt_test.TestFdt, elf_test.TestElf, image_test.TestImage,
          cbfs_util_test.TestCbfs, fip_util_test.TestFip])
 
-    return test_util.ReportResult('binman', test_name, result)
+    return test_util.report_result('binman', test_name, result)
 
 def RunTestCoverage(toolpath):
     """Run the tests and check that we get 100% coverage"""
@@ -102,7 +102,7 @@
     if toolpath:
         for path in toolpath:
             extra_args += ' --toolpath %s' % path
-    test_util.RunTestCoverage('tools/binman/binman', None,
+    test_util.run_test_coverage('tools/binman/binman', None,
             ['*test*', '*main.py', 'tools/patman/*', 'tools/dtoc/*'],
             args.build_dir, all_set, extra_args or None)