reader-nagra/irdeto: change force_irdeto guard to READER_IRDETO only
force_irdeto forces a card to use the Irdeto reader instead of Nagra. In reader-nagra.c it causes the reader to reject the card so the Irdeto reader can handle it. This only makes sense when READER_IRDETO is compiled - otherwise there's no Irdeto reader to take over.
Changes:
- globals.h: Change guard from (READER_NAGRA || READER_IRDETO) to READER_IRDETO only
- oscam-config-reader.c: Change guard to READER_IRDETO only
- module-webif.c: Change guard to READER_IRDETO only
- reader-nagra.c: Add READER_IRDETO guard around force_irdeto check