tests: fix filter for cortex-m3/m4

This test does not work for cortex-m0+ yet, so make
it run only on m3/m4 for now.

Change-Id: I0a90335d264cf88f3a62057860d6f129085c558f
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
1 file changed