tests/functional: Convert the Avocado mips64el tuxrun test

Move the test into a new file so that it can be run via
qemu-system-mips64el in the functional framework.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20241011131937.377223-15-thuth@redhat.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index c7cd5a2..cd9ebe7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1312,9 +1312,8 @@
 F: hw/pci-host/gt64120.c
 F: include/hw/southbridge/piix.h
 F: tests/avocado/linux_ssh_mips_malta.py
-F: tests/functional/test_mips_malta.py
-F: tests/functional/test_mipsel_malta.py
-F: tests/functional/test_mips64el_malta.py
+F: tests/functional/test_mips*_malta.py
+F: tests/functional/test_mips*_tuxrun.py
 
 Mipssim
 R: Aleksandar Rikalo <arikalo@gmail.com>