enabled m4f on boot

layers/meta-devdistro/recipes-kernel/linux/files/am62x_enable_m4f.dts

@@ -0,0 +1,13 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "ti,am625-beagleplay", "ti,am625";
+    
+    fragment@0 {
+        target = <&mcu_m4fss>;
+        __overlay__ {
+            status = "okay";
+        };
+    };
+};

layers/meta-devdistro/recipes-kernel/linux/linux-bb.org_%.bbappend

@@ -0,0 +1,15 @@
+FILESEXTRAPATHS:prepend := "${THISDIR}/files:"
+
+SRC_URI += "file://am62x_enable_m4f.dts"
+
+do_compile:append() {
+    mkdir -p ${B}/arch/${ARCH}/boot/dts/overlays
+
+    oe_runmake dtbs_prepare
+    ${STAGING_BINDIR_NATIVE}/dtc -@ -I dts -O dtb -o ${B}/arch/${ARCH}/boot/dts/overlays/am62x_enable_m4f.dtbo ${WORKDIR}/am62x_enable_m4f.dts
+}
+
+do_deploy:append() {
+    install -d ${DEPLOYDIR}/overlays
+    install -m 0644 ${B}/arch/${ARCH}/boot/dts/overlays/am62x_enable_m4f.dtbo ${DEPLOYDIR}/overlays/
+}