sdm: Create rotator modules only if a config has required h/w

Create rotator modules only if all the necessary h/w blocks are
reported by the driver implementation, i.e number of rotators or
if DMA pipes are shared with rotators then a valid number of DMA
pipes.

CRs-Fixed: 985138
Change-Id: I16809d821a4f65817794a792ccb6cb02277ce069
2 files changed