selftests: livepatch: test-ftrace: livepatch a traced function

selftests: livepatch: test-ftrace: livepatch a traced function

This is basically the inverse case of commit 474eecc882ae
("selftests: livepatch: test if ftrace can trace a livepatched function")
but ensuring that livepatch would work on a traced function.

Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Tested-by: Petr Mladek <pmladek@suse.com>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Acked-by: Joe Lawrence <joe.lawrence@redhat.com>
Link: https://patch.msgid.link/20260220-lp-test-trace-v1-1-4b6703cd01a6@suse.com
[pmladek: Fixed a typo found by Joe.]
Signed-off-by: Petr Mladek <pmladek@suse.com>