Modifying the switches related to split rendering
- Related issues:
 - Requested reviewers: @vaclav
 
Reason why this change is needed
- To clean up Split rendering switches in options.h.
 
Description of the change
- All the split rendering sub-switches (other than main split rendering switch SPLIT_REND_WITH_HEAD_ROT), have been merged with SPLIT_REND_WITH_HEAD_ROT.
 
Affected operating points
- All split rendering output formats
 - This change does not impact bitstream and is BE
 
Edited  by TYAGIRIS