fix reconfig issue, older kernel need mkimage

target/config/Config.in.tools

@@ -38,6 +38,10 @@ config ADK_HOST_NEED_CCACHE
 	boolean
 	default n
 
+config ADK_HOST_NEED_MKIMAGE
+	boolean
+	default n
+
 config ADK_HOST_NEED_PCRE
 	boolean
 	default y if ADK_HOST_DARWIN

target/microblaze/sys-available/qemu-microblaze

@@ -6,6 +6,7 @@ config ADK_TARGET_SYSTEM_QEMU_MICROBLAZE
 	select ADK_HARDWARE_QEMU
 	select ADK_TARGET_WITH_MTD
 	select ADK_TARGET_KERNEL_LINUXBIN
+	select ADK_HOST_NEED_MKIMAGE
 	help
 	 Qemu support for microblaze big endian architecture.
 

target/microblaze/sys-available/qemu-microblazeel

@@ -1,11 +1,12 @@
 config ADK_TARGET_SYSTEM_QEMU_MICROBLAZEEL
 	bool "Qemu Emulator (little endian)"
-	select ADK_microblazeel
+	select ADK_microblaze
 	select ADK_qemu_microblazeel
 	select ADK_little
 	select ADK_HARDWARE_QEMU
 	select ADK_TARGET_WITH_MTD
 	select ADK_TARGET_KERNEL_LINUXBIN
+	select ADK_HOST_NEED_MKIMAGE
 	help
 	 Qemu support for microblaze little endian architecture.