ftrace: fix some mistakes in error messages

This patch fixes some mistakes on the tracer in warning messages when
debugfs fails to create tracing files.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: srostedt@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
1 file changed