ARM: dts: pxa: use new 'dma-channels/requests' properties

The '#dma-channels' and '#dma-requests' properties were deprecated in
favor of these defined by generic dma-common DT bindings.  Add new
properties while keeping old ones for backwards compatibility.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220516142857.6419-2-krzysztof.kozlowski@linaro.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/boot/dts/mmp2.dtsi

@@ -275,7 +275,9 @@ dma-controller@d4000000 {
 				compatible = "marvell,pdma-1.0";
 				reg = <0xd4000000 0x10000>;
 				interrupts = <48>;
+				/* For backwards compatibility: */
 				#dma-channels = <16>;
+				dma-channels = <16>;
 				status = "disabled";
 			};
 

arch/arm/boot/dts/pxa25x.dtsi

@@ -38,9 +38,12 @@ pdma: dma-controller@40000000 {
 			compatible = "marvell,pdma-1.0";
 			reg = <0x40000000 0x10000>;
 			interrupts = <25>;
-			#dma-channels = <16>;
 			#dma-cells = <2>;
+			/* For backwards compatibility: */
+			#dma-channels = <16>;
+			dma-channels = <16>;
 			#dma-requests = <40>;
+			dma-requests = <40>;
 			status = "okay";
 		};
 

arch/arm/boot/dts/pxa27x.dtsi

@@ -12,9 +12,12 @@ pdma: dma-controller@40000000 {
 			compatible = "marvell,pdma-1.0";
 			reg = <0x40000000 0x10000>;
 			interrupts = <25>;
-			#dma-channels = <32>;
 			#dma-cells = <2>;
+			/* For backwards compatibility: */
+			#dma-channels = <32>;
+			dma-channels = <32>;
 			#dma-requests = <75>;
+			dma-requests = <75>;
 			status = "okay";
 		};
 

arch/arm/boot/dts/pxa3xx.dtsi

@@ -122,9 +122,12 @@ pdma: dma-controller@40000000 {
 			compatible = "marvell,pdma-1.0";
 			reg = <0x40000000 0x10000>;
 			interrupts = <25>;
-			#dma-channels = <32>;
 			#dma-cells = <2>;
+			/* For backwards compatibility: */
+			#dma-channels = <32>;
+			dma-channels = <32>;
 			#dma-requests = <100>;
+			dma-requests = <100>;
 			status = "okay";
 		};