tests/functional: Convert the Avocado sparc64 tuxrun test

Move the test to a new file so that it can be run via
qemu-system-sparc64 in the functional framework.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20241011131937.377223-5-thuth@redhat.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 8f4a58f..efc2a2c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1663,6 +1663,7 @@
 F: include/hw/pci-bridge/simba.h
 F: pc-bios/openbios-sparc64
 F: tests/functional/test_sparc64_sun4u.py
+F: tests/functional/test_sparc64_tuxrun.py
 
 Sun4v
 M: Artyom Tarasenko <atar4qemu@gmail.com>