arm64: dts: exynos: Move fixed-clocks out of soc

The XXTI fixed-clock is the input to the SoC therefore it should not be
inside the soc node.  This also fixes DTC W=1 warning:

    arch/arm64/boot/dts/exynos/exynos7.dtsi:90.17-94.5:
        Warning (simple_bus_reg): /soc/xxti: missing or empty reg/ranges property

While moving, change the name of the xxti node to match the generic type
of device (following DeviceTree specification).
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm64/boot/dts/exynos/exynos5433.dtsi

@@ -41,6 +41,13 @@ arm_a57_pmu {
 		interrupt-affinity = <&cpu4>, <&cpu5>, <&cpu6>, <&cpu7>;
 	};
 
+	xxti: clock {
+		/* XXTI */
+		compatible = "fixed-clock";
+		clock-output-names = "oscclk";
+		#clock-cells = <0>;
+	};
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;
@@ -260,12 +267,6 @@ chipid@10000000 {
 			reg = <0x10000000 0x100>;
 		};
 
-		xxti: xxti {
-			compatible = "fixed-clock";
-			clock-output-names = "oscclk";
-			#clock-cells = <0>;
-		};
-
 		cmu_top: clock-controller@10030000 {
 			compatible = "samsung,exynos5433-cmu-top";
 			reg = <0x10030000 0x1000>;

arch/arm64/boot/dts/exynos/exynos7.dtsi

@@ -38,6 +38,13 @@ arm-pmu {
 				     <&cpu_atlas2>, <&cpu_atlas3>;
 	};
 
+	fin_pll: clock {
+		/* XXTI */
+		compatible = "fixed-clock";
+		clock-output-names = "fin_pll";
+		#clock-cells = <0>;
+	};
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;
@@ -87,12 +94,6 @@ chipid@10000000 {
 			reg = <0x10000000 0x100>;
 		};
 
-		fin_pll: xxti {
-			compatible = "fixed-clock";
-			clock-output-names = "fin_pll";
-			#clock-cells = <0>;
-		};
-
 		gic: interrupt-controller@11001000 {
 			compatible = "arm,gic-400";
 			#interrupt-cells = <3>;