arm64: dts: apm: Drop "dma" device_type

The only supported cases of otherwise deprecated for FDT "device_type"
property are memory, cpu, and pci. "dma" is not valid, so drop it.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20251216-dt-apm-v1-4-0bf2bf8b982c@kernel.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

Author: robherring

arch/arm64/boot/dts/apm/apm-storm.dtsi

@@ -1083,7 +1083,6 @@
 
 		dma: dma@1f270000 {
 			compatible = "apm,xgene-storm-dma";
-			device_type = "dma";
 			reg = <0x0 0x1f270000 0x0 0x10000>,
 			      <0x0 0x1f200000 0x0 0x10000>,
 			      <0x0 0x1b000000 0x0 0x400000>,