sdm: Fix ROI and Split info in SF dumpsys

- Use strings "Comp-1" and Comp-2" for pipes of a SDM layer, to avoid
  confusion of left or right layer mixer in SF dumpsys.
- Dump right ROI information, only if it is required.

CRs-Fixed: 928645
Change-Id: I7d4c1fa365e31b1037235a8cf31eb1342c415c62
1 file changed