CONFIG_TARGET_ar71xx_tiny not very useful

I'm not sure why mini-smpd doesn't appear (and I seem to recall that, along with its libraries, it's actually bigger than snmpd, which supports 64-bit counters).

Within make menuconfig the dependencies can be seen with the question-mark key. That may provide some insight.

On the "why", much is captured at

without my opinions on those decisions intended to be discussed here.