[MYON2][BOARD] Add custom overlays logic

Currently for audio codecs based on board revsion

board/seco/imx8mm_myon2/imx8mm_myon2.c

@@ -18,6 +18,7 @@
 #include <power/pmic.h>
 #include <power/bd71837.h>
 #include <usb.h>
+#include <seco/seco_fdt_overlay.h>
 
 #include "fuse_cfg.h"
 
@@ -535,6 +536,12 @@ int board_late_init(void)
 	env_set("board_rev", "IMX8MM");
 #endif
 
+if (GET_MYON2_REV_FUSES <= REV_V1R4) {
+	seco_fdt_overlay_add_custom("seco-imx8mm-myon2-wm8983.dtbo");
+} else if (GET_MYON2_REV_FUSES >= REV_V2R1) {
+	seco_fdt_overlay_add_custom("seco-imx8mm-myon2-wm8962.dtbo");
+}
+
 #ifdef CONFIG_ENV_IS_IN_MMC
 	board_late_mmc_env_init();
 #endif