test: Rename all linker lists to have a ut_ prefix

At present each test suite has its own portion of the linker_list section
of the image, but other lists are interspersed. This makes it hard to
enumerate all the available tests without knowing the suites that each one
is in.

Place all tests together in a single contiguous list by giving them
common prefix not used elsewhere in U-Boot. This makes it possible to find
the start and end of all tests.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/py/conftest.py b/test/py/conftest.py
index 9bfd926..1b909cd 100644
--- a/test/py/conftest.py
+++ b/test/py/conftest.py
@@ -226,7 +226,7 @@
         import u_boot_console_exec_attach
         console = u_boot_console_exec_attach.ConsoleExecAttach(log, ubconfig)
 
-re_ut_test_list = re.compile(r'_u_boot_list_2_(.*)_test_2_\1_test_(.*)\s*$')
+re_ut_test_list = re.compile(r'_u_boot_list_2_ut_(.*)_test_2_\1_test_(.*)\s*$')
 def generate_ut_subtest(metafunc, fixture_name, sym_path):
     """Provide parametrization for a ut_subtest fixture.