arm: dts: k3-am654: move dummy_clock to root node

The dummy_clock node is used to help the drivers probe the IO needed to
setup consoles and boot media to load firmware into the SoC.

This dummy_clock isn't a device that exists nor does it exist in the
mcu domain. So move it from cbass_mcu to the root node to avoid any
confusion.

Tested-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Bryan Brattlof <bb@ti.com>
Reviewed-by: Nishanth Menon <nm@ti.com>

arch/arm/dts/k3-am654-r5-base-board.dts

@@ -30,6 +30,13 @@
 		ti,sci-host-id = <10>;
 		bootph-pre-ram;
 	};
+
+	clk_200mhz: dummy_clock {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <200000000>;
+		bootph-pre-ram;
+	};
 };
 
 &cbass_mcu {
@@ -51,13 +58,6 @@
 		mbox-names = "tx", "rx";
 		bootph-pre-ram;
 	};
-
-	clk_200mhz: dummy_clock {
-		compatible = "fixed-clock";
-		#clock-cells = <0>;
-		clock-frequency = <200000000>;
-		bootph-pre-ram;
-	};
 };
 
 /*