test/py: Shorten u_boot_console

This fixture name is quite long and results in lots of verbose code.
We know this is U-Boot so the 'u_boot_' part is not necessary.

But it is also a bit of a misnomer, since it provides access to all the
information available to tests. It is not just the console.

It would be too confusing to use con as it would be confused with
config and it is probably too short.

So shorten it to 'ubman'.

Signed-off-by: Simon Glass <sjg@chromium.org>
Link: https://lore.kernel.org/u-boot/CAFLszTgPa4aT_J9h9pqeTtLCVn4x2JvLWRcWRD8NaN3uoSAtyA@mail.gmail.com/
diff --git a/test/py/tests/test_efi_fit.py b/test/py/tests/test_efi_fit.py
index 550058a..4a46438 100644
--- a/test/py/tests/test_efi_fit.py
+++ b/test/py/tests/test_efi_fit.py
@@ -123,7 +123,7 @@
 @pytest.mark.buildconfigspec('fit')
 @pytest.mark.notbuildconfigspec('generate_acpi_table')
 @pytest.mark.requiredtool('dtc')
-def test_efi_fit_launch(u_boot_console):
+def test_efi_fit_launch(ubman):
     """Test handling of UEFI binaries inside FIT images.
 
     The tests are trying to launch U-Boot's helloworld.efi embedded into
@@ -428,7 +428,7 @@
             assert '## Application failed' not in output
             cons.restart_uboot()
 
-    cons = u_boot_console
+    cons = ubman
     # Array slice removes leading/trailing quotes.
     sys_arch = cons.config.buildconfig.get('config_sys_arch', '"sandbox"')[1:-1]
     if sys_arch == 'arm':