DMA: JZ4780: Add DMA driver for X1000.

From: Zhou Yanjie
Date: Tue Oct 22 2019 - 23:05:39 EST


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