tracing: Fix selftest function recursion accounting

tracing: Fix selftest function recursion accounting

commit 05cbbf643b8eea1be21082c53cdb856d1dc6d765 upstream.

The test that checks function recursion does things differently
if the arch does not support all ftrace features. But that really
doesn't make a difference with how the test runs, and either way
the count variable should be 2 at the end.

Currently the test wrongly fails for archs that don't support all
the ftrace features.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>