dt-bindings: dma: ingenic: Add compatible strings for JZ4760(B) SoCs

Add ingenic,jz4760-dma and ingenic,jz4760b-dma compatible strings to
support the DMA engines present in the JZ4760 and JZ4760B SoCs.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20210120105322.16116-1-paul@crapouillou.netSigned-off-by: Vinod Koul <vkoul@kernel.org>

Documentation/devicetree/bindings/dma/ingenic,dma.yaml

@@ -17,6 +17,8 @@ properties:
     enum:
       - ingenic,jz4740-dma
       - ingenic,jz4725b-dma
+      - ingenic,jz4760-dma
+      - ingenic,jz4760b-dma
       - ingenic,jz4770-dma
       - ingenic,jz4780-dma
       - ingenic,x1000-dma