[oe] Blackfin support

[Tom Rini]

Hey all.  Has anyone built any of the blackfin boards recently?  I'm
finding things like uClibc 0.9.29+ require -mfdpic which isn't in our
gcc 4.1.x, is in gcc 4.2.x (but requires a patch to define __FDPIC__
rather than __BFIN_FDPIC__) and other issues still.  Just seeing if
anyone else has these things working before I start getting down and
dirty.  Thanks!

-- 
Tom Rini