ARM: dts: am437x/am33xx/omap/dm816x: Add gpmc dma channel

Add dma channel information to the gpmc. Although not enabled by
default this will allow prefetch-dma to be used.
Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am33xx.dtsi

@@ -819,6 +819,8 @@ gpmc: gpmc@50000000 {
 			ti,no-idle-on-init;
 			reg = <0x50000000 0x2000>;
 			interrupts = <100>;
+			dmas = <&edma 52>;
+			dma-names = "rxtx";
 			gpmc,num-cs = <7>;
 			gpmc,num-waitpins = <2>;
 			#address-cells = <2>;

arch/arm/boot/dts/am4372.dtsi

@@ -842,6 +842,8 @@ elm: elm@48080000 {
 		gpmc: gpmc@50000000 {
 			compatible = "ti,am3352-gpmc";
 			ti,hwmods = "gpmc";
+			dmas = <&edma 52>;
+			dma-names = "rxtx";
 			clocks = <&l3s_gclk>;
 			clock-names = "fck";
 			reg = <0x50000000 0x2000>;

arch/arm/boot/dts/dm816x.dtsi

@@ -179,6 +179,8 @@ gpmc: gpmc@50000000 {
 			#address-cells = <2>;
 			#size-cells = <1>;
 			interrupts = <100>;
+			dmas = <&edma 52>;
+			dma-names = "rxtx";
 			gpmc,num-cs = <6>;
 			gpmc,num-waitpins = <2>;
 		};

arch/arm/boot/dts/omap3.dtsi

@@ -717,6 +717,8 @@ gpmc: gpmc@6e000000 {
 			ti,hwmods = "gpmc";
 			reg = <0x6e000000 0x02d0>;
 			interrupts = <20>;
+			dmas = <&sdma 4>;
+			dma-names = "rxtx";
 			gpmc,num-cs = <8>;
 			gpmc,num-waitpins = <4>;
 			#address-cells = <2>;

arch/arm/boot/dts/omap4.dtsi

@@ -354,6 +354,8 @@ gpmc: gpmc@50000000 {
 			#address-cells = <2>;
 			#size-cells = <1>;
 			interrupts = <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
+			dmas = <&sdma 4>;
+			dma-names = "rxtx";
 			gpmc,num-cs = <8>;
 			gpmc,num-waitpins = <4>;
 			ti,hwmods = "gpmc";

arch/arm/boot/dts/omap5.dtsi

@@ -391,6 +391,8 @@ gpmc: gpmc@50000000 {
 			#address-cells = <2>;
 			#size-cells = <1>;
 			interrupts = <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
+			dmas = <&sdma 4>;
+			dma-names = "rxtx";
 			gpmc,num-cs = <8>;
 			gpmc,num-waitpins = <4>;
 			ti,hwmods = "gpmc";