arm64: dts: sdm630: Fix dma node name

DMA controller binding describes the node name should be dma-controller
and not dma, so fix the node name
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20201027164511.476312-3-vkoul@kernel.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/sdm630.dtsi

@@ -830,7 +830,7 @@ sdhc_1: sdhci@c0c4000 {
 			status = "disabled";
 		};
 
-		blsp1_dma: dma@c144000 {
+		blsp1_dma: dma-controller@c144000 {
 			compatible = "qcom,bam-v1.7.0";
 			reg = <0x0c144000 0x1f000>;
 			interrupts = <GIC_SPI 238 IRQ_TYPE_LEVEL_HIGH>;
@@ -944,7 +944,7 @@ blsp_i2c4: i2c@c178000 {
 			status = "disabled";
 		};
 
-		blsp2_dma: dma@c184000 {
+		blsp2_dma: dma-controller@c184000 {
 			compatible = "qcom,bam-v1.7.0";
 			reg = <0x0c184000 0x1f000>;
 			interrupts = <GIC_SPI 239 IRQ_TYPE_LEVEL_HIGH>;