arm64: dts: qcom: sa8775p: mark ethernet devices as DMA-coherent

Ethernet devices are cache coherent, mark it as such in the dtsi.

Fixes: ff499a0f ("arm64: dts: qcom: sa8775p: add the first 1Gb ethernet interface")
Fixes: e952348a ("arm64: dts: qcom: sa8775p: add a node for EMAC1")
Signed-off-by: Sagar Cheluvegowda <quic_scheluve@quicinc.com>
Link: https://lore.kernel.org/r/20240514-mark_ethernet_devices_dma_coherent-v4-1-04e1198858c5@quicinc.comSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sa8775p.dtsi

@@ -3430,6 +3430,7 @@ ethernet1: ethernet@23000000 {
 			phy-names = "serdes";
 
 			iommus = <&apps_smmu 0x140 0xf>;
+			dma-coherent;
 
 			snps,tso;
 			snps,pbl = <32>;
@@ -3464,6 +3465,7 @@ ethernet0: ethernet@23040000 {
 			phy-names = "serdes";
 
 			iommus = <&apps_smmu 0x120 0xf>;
+			dma-coherent;
 
 			snps,tso;
 			snps,pbl = <32>;