Issue Description:
In the Delete API (CsitxDrv_delete) of CSITX, event unregister API CsitxDrv_eventGroupUnRegister is not getting called due to below loop. This never gets executed, because eventGroup is set to 0. This causes failure in reopening the driver after doing open->close for 27 times..

                for (eventIdx = 0U ;
                     eventIdx < instObj->createParams.instCfg.eventParams[eventIdx].eventGroup;
                     eventIdx++)

This loop should be replaced with below loop, just like create API.

        for (eventIdx = 0U ;
             eventIdx < CSITX_EVENT_GROUP_MAX;
             eventIdx++)

Resolution Description:
Fixed CSITX Driver delete sequence to unregister all available event groups.
Previously, event unregister is not getting executed due to the loop count being incorrect.