input: add ATE

...somehow this went missing, and it's the only thing
that went missing from the merge. w/e
Fix dancing cwm

Thanks Scritchz

Change-Id: Ifca57963196e86bb0d64941fec76f5a117b6ad86
Makefile: Set arm as the default ARCH

We shouldn't have to keep manually specifying ARCH=arm when compil-
ing, ie: `make clean`