dmaengine: JZ4780: Add dmaengine driver for X1000.

From: Zhou Yanjie
Date: Wed Oct 23 2019 - 03:02:46 EST


1.Add the dmaengine bindings for the X1000 SoC from Ingenic.
2.Add support for probing the dma-jz4780 driver on the
X1000 SoC from Ingenic.