add lrzsz dropbear build shell script

guowenxue

2019-08-02 88c7ac5c5ef9ae4887bdc04e950d36618c6ddf85

 ok335xD/linux-bsp/build.sh

@@ -121,7 +121,7 @@
mode=ubi
image=ubi.img
vol_id=0
vol_size=231MiB
vol_size=140MiB
vol_type=dynamic
vol_name=rootfs
vol_flags=autoresize