dmaengine: ioatdma: remove ioatdma v2 registration

Removal of support for ioatdma v2 device support.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --cc drivers/dma/ioat/dca.c
Simple merge

diff --cc drivers/dma/ioat/dma.c
Simple merge

diff --cc drivers/dma/ioat/dma_v2.c
Simple merge

diff --cc drivers/dma/ioat/dma_v2.h
Simple merge

diff --cc drivers/dma/ioat/pci.c
Simple merge