These devices only have 64 MiB RAM and ath10k wireless driver will
consume a lot of memory. Let's move them to the tiny sub-target to
get extra 7 MiB of free space. In this way, we can extend their
lifetime to receive support for the next OpenWrt LTS version. This
patch also trims the USB package for the non-existent USB port.
Signed-off-by: Shiji Yang <yangshiji66@qq.com>