[oe] [meta-oe][PATCH 3/3] llvm2.9: try to fix thumb build and disable it after failure

[Henning Heinold]

Hi Martin,

sorry to say but arm support on 2.9 is broken in serval way. I put
it in mostly for testing purpose. Maybe with upcoming llvm 3.3 the arm situation
will be better.

Bye Henning