[PATCH v2] lib/dmadev: get DMA device using device ID

[Anoob Joseph]

> 
> DMA library has a function to get DMA device based on device name but
> there is no function to get DMA device using device id.
> 
> Added a function that lookup for the dma device using device id and returns
> the pointer to the same.
> 
> Signed-off-by: Amit Prakash Shukla <amitprakashs at marvell.com>
> Acked-by: Chengwen Feng <fengchengwen at huawei.com>

Acked-by: Anoob Joseph <anoobj at marvell.com>