build: drop kernel.dtb from qemu disk.img to avoid dts data mismatch.

because the dts may be updated in freeloader.

Signed-off-by: matthew.gui <guibing@nuclei.com>

Author: matthew.gui

Makefile

@@ -559,7 +559,7 @@ $(qemu_disk): $(boot_zip)
 	cd $(boot_wrkdir) && dd if=/dev/zero of=$(qemu_disk) bs=$(DISK_SIZE)M count=1
 	echo "Please make sure mformat version is >= 4.0.24, current version $(shell mformat --version)"
 	cd $(boot_wrkdir) && mformat -F -h 64 -s 32 -t $$(($(DISK_SIZE)-1)) :: -i $(qemu_disk) || rm -f $(qemu_disk)
-	cd $(boot_wrkdir) && mcopy -i $(qemu_disk) boot.scr kernel.dtb uImage.lz4 uInitrd.lz4 :: || rm -f $(qemu_disk)
+	cd $(boot_wrkdir) && mcopy -i $(qemu_disk) boot.scr uImage.lz4 uInitrd.lz4 :: || rm -f $(qemu_disk)
 
 run_qemu: $(qemu_disk) $(freeloader_elf)
 	@echo "Run on qemu for simulation"