efi: Rename the base efi self-test

This function uses the same base name as all the others in this file, so
it is not easy to run just that one test. Add a _base suffix so that it
can be run on its own.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/test/py/tests/test_efi_selftest.py b/test/py/tests/test_efi_selftest.py
index e92d63c..43f2424 100644
--- a/test/py/tests/test_efi_selftest.py
+++ b/test/py/tests/test_efi_selftest.py
@@ -7,7 +7,7 @@
 import pytest
 
 @pytest.mark.buildconfigspec('cmd_bootefi_selftest')
-def test_efi_selftest(u_boot_console):
+def test_efi_selftest_base(u_boot_console):
     """Run UEFI unit tests
 
     u_boot_console -- U-Boot console