update images build shell script

guowenxu

2021-11-20 ed0e2836138849c3d66efb7462a505d5cd3e348e

 bsp/bootloader/build.sh

@@ -95,6 +95,7 @@

    mkdir -p ${IMG_PATH}
    cp ${IMG_NAME} ${IMG_PATH}
    cp ${IMG_NAME} /tftp

    cd ${PRJ_PATH}
}