dts: arm: nxp: Add STM device tree info

1. Add clocks property for stm_0 and stm_1
2. Set stm_0  status okay for frdm_mcxe31b board dts

Signed-off-by: Felix Wang <[email protected]>

Author: FelixWang47831

boards/nxp/frdm_mcxe31b/frdm_mcxe31b.dts

@@ -165,3 +165,8 @@
 	mux-0-dc-5-div = <4>;
 	mux-0-dc-6-div = <1>;
 };
+
+&stm_0 {
+	status = "okay";
+	prescaler = <1>;
+};

dts/arm/nxp/nxp_mcxe31x_common.dtsi

@@ -972,13 +972,15 @@
 		compatible = "nxp,stm";
 		reg = <0x274000 0x68>;
 		interrupts = <39 0>;
+		clocks = <&mc_cgm MCUX_STM0_CLK>;
 		status = "disabled";
 	};
 
 	stm_1: stm@474000 {
 		compatible = "nxp,stm";
 		reg = <0x474000 0x68>;
 		interrupts = <40 0>;
+		clocks = <&mc_cgm MCUX_STM1_CLK>;
 		status = "disabled";
 	};