The test identifier of mutex error case in testcase.yaml is
exactly the same as mutex api's test identifier.
So I fix this.
Signed-off-by: Lixin Guo <lixinx.guo@intel.com>
Add some error case testing such as invoking mutex with null parameter
or using it interrupt context. This is for checking if API robust
enough in error condition handling.
Signed-off-by: Enjia Mai <enjiax.mai@intel.com>