dmaengine: ioatdma: move all the init routines

Moving all the init routines to init.c and fixup anything broken during
the move.

Signed-off-by: Dave Jiang <[email protected]>
Acked-by: Dan Williams <[email protected]>
Signed-off-by: Vinod Koul <[email protected]>

Author: davejiang

drivers/dma/ioat/Makefile

@@ -1,2 +1,2 @@
 obj-$(CONFIG_INTEL_IOATDMA) += ioatdma.o
-ioatdma-y := pci.o dma.o dma_v3.o dca.o sysfs.o
+ioatdma-y := init.o dma.o dma_v3.o dca.o sysfs.o