linux-phytec-ti

ARM: ls1021a: Add dma-coherent property for eTSEC nodes

This patch adds dma-coherent property for eTSEC nodes, so
coherent DMA operations are supported.

Signed-off-by: Alison Wang <alison.wang@freescale.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>