ARM: dts: omap2/3: Drop dmas property from I2C node

DMA was never supported by i2c-omap driver and the bindings were never
documented. Therefore drop the entries in preparation to moving
bindings to YAML schema.

Signed-off-by: Vignesh Raghavendra <[e-mail]>
Reviewed-by: Grygorii Strashko <[e-mail]>
Signed-off-by: Tony Lindgren <[e-mail]>

arch/arm/boot/dts/dm816x.dtsi

···
 			#address-cells = <1>;
 			#size-cells = <0>;
 			interrupts = <70>;
-			dmas = <&edma 58 0 &edma 59 0>;
-			dma-names = "tx", "rx";
 		};
 
 		i2c2: i2c@4802a000 {
···
 			#address-cells = <1>;
 			#size-cells = <0>;
 			interrupts = <71>;
-			dmas = <&edma 60 0 &edma 61 0>;
-			dma-names = "tx", "rx";
 		};
 
 		intc: interrupt-controller@48200000 {

arch/arm/boot/dts/omap2.dtsi

···
 			#address-cells = <1>;
 			#size-cells = <0>;
 			interrupts = <56>;
-			dmas = <&sdma 27 &sdma 28>;
-			dma-names = "tx", "rx";
 		};
 
 		i2c2: i2c@48072000 {
···
 			#address-cells = <1>;
 			#size-cells = <0>;
 			interrupts = <57>;
-			dmas = <&sdma 29 &sdma 30>;
-			dma-names = "tx", "rx";
 		};
 
 		mcspi1: spi@48098000 {

arch/arm/boot/dts/omap3.dtsi

···
 			compatible = "ti,omap3-i2c";
 			reg = <0x48070000 0x80>;
 			interrupts = <56>;
-			dmas = <&sdma 27 &sdma 28>;
-			dma-names = "tx", "rx";
 			#address-cells = <1>;
 			#size-cells = <0>;
 			ti,hwmods = "i2c1";
···
 			compatible = "ti,omap3-i2c";
 			reg = <0x48072000 0x80>;
 			interrupts = <57>;
-			dmas = <&sdma 29 &sdma 30>;
-			dma-names = "tx", "rx";
 			#address-cells = <1>;
 			#size-cells = <0>;
 			ti,hwmods = "i2c2";
···
 			compatible = "ti,omap3-i2c";
 			reg = <0x48060000 0x80>;
 			interrupts = <61>;
-			dmas = <&sdma 25 &sdma 26>;
-			dma-names = "tx", "rx";
 			#address-cells = <1>;
 			#size-cells = <0>;
 			ti,hwmods = "i2c3";