ARM: dts: k3-am642: Correct timer frequency

Timer0 runs at 200MHz,and the clock-frequency defined in DT is
incorrect. Fix it.
Signed-off-by: NVignesh Raghavendra <vigneshr@ti.com>
Reviewed-By: NNishanth Menon <nm@ti.com>

arch/arm/dts/k3-am642-evm-u-boot.dtsi

@@ -16,7 +16,7 @@
 		compatible = "ti,omap5430-timer";
 		reg = <0x0 0x2400000 0x0 0x80>;
 		ti,timer-alwon;
-		clock-frequency = <250000000>;
+		clock-frequency = <200000000>;
 		u-boot,dm-spl;
 	};
 };

arch/arm/dts/k3-am642-sk-u-boot.dtsi

@@ -20,7 +20,7 @@
 		compatible = "ti,omap5430-timer";
 		reg = <0x0 0x2400000 0x0 0x80>;
 		ti,timer-alwon;
-		clock-frequency = <250000000>;
+		clock-frequency = <200000000>;
 		u-boot,dm-spl;
 	};
 };