Go is a language. There's no problem with dynamic loading as such; it's just that the primary implementation uses static linking for convenience. You'd simply have to write a dynamically loading runtime (and come up with some semantics for dynamic loading, which sounds tricky but probably can be handled somehow). The simple-yet-efficient model of implementing Go would require some things to be taken care of - for example, the method dispatch tables.

Also, "Android only uses dynamic loading" - given the existence of NDK, how is that true? As far as I know, you can link statically whatever you want.