[PATCH v5 05/24] ARM/dmaengine: edma: Move of_dma_controller_register to the dmaengine driver

If the of_dma_controller is registered in the non dmaengine driver we could have race condition: the of_dma_controller has been registered, but the dmaengine driver is not yet probed. Drivers requesting DMA channels during this window will fail since we do not yet have dmaengine drivers

[PATCH v5 05/24] ARM/dmaengine: edma: Move of_dma_controller_register to the dmaengine driver

If the of_dma_controller is registered in the non dmaengine driver we could have race condition: the of_dma_controller has been registered, but the dmaengine driver is not yet probed. Drivers requesting DMA channels during this window will fail since we do not yet have dmaengine drivers