tests/functional: Convert the Avocado ppc32 tuxrun test

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

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20241011131937.377223-16-thuth@redhat.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index cd9ebe7..8777e31 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1396,6 +1396,7 @@
 F: include/hw/ppc/openpic_kvm.h
 F: docs/system/ppc/ppce500.rst
 F: tests/functional/test_ppc64_e500.py
+F: tests/functional/test_ppc_tuxrun.py
 
 mpc8544ds
 M: Bernhard Beschow <shentey@gmail.com>