add a new flag that is set in case a submodule with diagnosis is reported in ModuleDiffBlock

To ease application handling the service "RCX_GET_SLAVE_CONN_INFO_REQ" shall be modified in such a way that for active IO Devices a new flag shall be introduced.

Using this flag application can detect that during AR establishment a submodule with diagnosis was contained in ModuleDiffBlock.

So two independent flags exist. One (newly introduced) showing a sbumodule with diagnosis exists. The other one (already existing) showing a wrong/missing submodule exists.

The following #defines shall be used

#define PNIO_IOD_DIAG_MODULE_DIFF_REPORTED_WRONG_OR_MISSING    0x0800  /* IO-Device reported a ModuleDiffBlock in Connect-Response containing wrong or missing submodules */

#define PNIO_IOD_DIAG_MODULE_DIFF_REPORTED_DIAGNOSIS           0x2000  /* IO-Device reported a ModuleDiffBlock in Connect-Response containing submodules with diagnosis */