Parameter checks in set config packet are not according to the API documentation

Within the packet EIP_APS_SET_CONFIGURATION_ PARAMETERS_REQ_T, the stack checks the following values related to the identity object not in the way it is documented.

• usVendorID
• usProductType
• usProductCode

Currently not only the parameters itself are checked (valid range etc), but also the relationship between these.
Currently either all of them must be != 0 or all must be == 0.
This shall be changed so that they can be configured independently of each other.