update hardknott to add overlays support in /boot

guowenxue

2022-10-09 614d7a954dfbdeaa55500e0ba223b6899a1c7eda

 bsp/bootloader/build.sh

@@ -41,7 +41,7 @@
    fi

    pr_warn "Modify cross compiler in Makefile: $CROSS_TOOL"
    sed -i -e "s|^CROSS_COMPILE=.*|CROSS_COMPILE?=${CROSS_TOOL}|g" Makefile
    sed -i -e "s|^CROSS_COMPILE ?= .*|CROSS_COMPILE?=${CROSS_TOOL}|g" Makefile

    cd ${PRJ_PATH}
}