ARM: at91/dt: sam9n12 crystals under the clocks node

Having clocks grouped in a subnode is common practice, so move the crystals
under a clocks node for the at91sam9n12 SoC and at91sam9n12 based boards.
Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: NBoris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/at91sam9n12.dtsi

@@ -50,16 +50,18 @@
 		reg = <0x20000000 0x10000000>;
 	};
 
-	slow_xtal: slow_xtal {
-		compatible = "fixed-clock";
-		#clock-cells = <0>;
-		clock-frequency = <0>;
-	};
+	clocks {
+		slow_xtal: slow_xtal {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <0>;
+		};
 
-	main_xtal: main_xtal {
-		compatible = "fixed-clock";
-		#clock-cells = <0>;
-		clock-frequency = <0>;
+		main_xtal: main_xtal {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <0>;
+		};
 	};
 
 	ahb {

arch/arm/boot/dts/at91sam9n12ek.dts

@@ -21,14 +21,6 @@
 		reg = <0x20000000 0x8000000>;
 	};
 
-	slow_xtal {
-		clock-frequency = <32768>;
-	};
-
-	main_xtal {
-		clock-frequency = <16000000>;
-	};
-
 	clocks {
 		#address-cells = <1>;
 		#size-cells = <1>;
@@ -38,6 +30,14 @@
 			compatible = "atmel,osc", "fixed-clock";
 			clock-frequency = <16000000>;
 		};
+
+		slow_xtal {
+			clock-frequency = <32768>;
+		};
+
+		main_xtal {
+			clock-frequency = <16000000>;
+		};
 	};
 
 	ahb {