Some time ago there was a post on the newsgroup of someone that had a working GDC which would output ARM binaries and he even converted the most important parts of druntime to work for android to. But unfortunately I can't remember where that was.
Johannes Pfau has a GDC fork with Android support here: https://github.com/jpf91/GDC/tree/android
and build scripts that build NDK with D support here: https://github.com/jpf91/gdc-android-scripts
