ARM: at91/dt: sama5d3 crystals under the clocks node

Having clocks grouped in a subnode is common practice, so move the crystals
under a clocks node for the sama5d3 SoC and sama5d3 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/at91-sama5d3_xplained.dts

@@ -21,6 +21,7 @@
 		reg = <0x20000000 0x10000000>;
 	};
 
+	clocks {
 		slow_xtal {
 			clock-frequency = <32768>;
 		};
@@ -28,6 +29,7 @@
 		main_xtal {
 			clock-frequency = <12000000>;
 		};
+	};
 
 	ahb {
 		apb {

arch/arm/boot/dts/sama5d3.dtsi

@@ -58,6 +58,7 @@
 		reg = <0x20000000 0x8000000>;
 	};
 
+	clocks {
 		slow_xtal: slow_xtal {
 			compatible = "fixed-clock";
 			#clock-cells = <0>;
@@ -70,7 +71,6 @@
 			clock-frequency = <0>;
 		};
 
-	clocks {
 		adc_op_clk: adc_op_clk{
 			compatible = "fixed-clock";
 			#clock-cells = <0>;

arch/arm/boot/dts/sama5d3xcm.dtsi

@@ -18,6 +18,7 @@
 		reg = <0x20000000 0x20000000>;
 	};
 
+	clocks {
 		slow_xtal {
 			clock-frequency = <32768>;
 		};
@@ -25,6 +26,7 @@
 		main_xtal {
 			clock-frequency = <12000000>;
 		};
+	};
 
 	ahb {
 		apb {