dt-bindings: i2c: Use correct vendor prefix for Atmel

The "at," prefix was never correct for Atmel, so fix the few occurrences
that got it wrong. Use "atmel," instead.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Acked-by: Peter Rosin <peda@axentia.se>
[wsa: merged two patches into one, dropped 'trivial-devices' hunk which
      needs to go in seperately]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Documentation/devicetree/bindings/i2c/i2c-at91.txt

@@ -33,7 +33,7 @@ i2c0: i2c@fff84000 {
 	clock-frequency = <400000>;
 
 	24c512@50 {
-		compatible = "24c512";
+		compatible = "atmel,24c512";
 		reg = <0x50>;
 		pagesize = <128>;
 	}

Documentation/devicetree/bindings/i2c/i2c-mux-ltc4306.txt

@@ -43,7 +43,7 @@ Example:
 			reg = <0>;
 
 			eeprom@50 {
-				compatible = "at,24c02";
+				compatible = "atmel,24c02";
 				reg = <0x50>;
 			};
 		};
@@ -54,7 +54,7 @@ Example:
 			reg = <1>;
 
 			eeprom@50 {
-				compatible = "at,24c02";
+				compatible = "atmel,24c02";
 				reg = <0x50>;
 			};
 		};

Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt

@@ -54,7 +54,7 @@ Example:
 			reg = <2>;
 
 			eeprom@54 {
-				compatible = "at,24c08";
+				compatible = "atmel,24c08";
 				reg = <0x54>;
 			};
 		};

Documentation/devicetree/bindings/i2c/nxp,pca9541.txt

@@ -22,7 +22,7 @@ Example:
 			#size-cells = <0>;
 
 			eeprom@54 {
-				compatible = "at,24c08";
+				compatible = "atmel,24c08";
 				reg = <0x54>;
 			};
 		};