arm64: dts: ti: k3-am62a: Remove syscon compatible from epwm_tbclk

The other instances have been fixed, but AM62a seems to have been missed,
fix this here.
Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20230802174521.236255-1-afd@ti.comSigned-off-by: Nishanth Menon <nm@ti.com>

arch/arm64/boot/dts/ti/k3-am62a-main.dtsi

@@ -56,7 +56,7 @@ phy_gmii_sel: phy@4044 {
 		};
 
 		epwm_tbclk: clock-controller@4130 {
-			compatible = "ti,am62-epwm-tbclk", "syscon";
+			compatible = "ti,am62-epwm-tbclk";
 			reg = <0x4130 0x4>;
 			#clock-cells = <1>;
 		};