Kprobes Support for ARM arch

[Abhishek Sagar]

> > The attached patch addresses the branch instructions
> > check for ARM kprobes last week release and avoids
> > unexpected crash when probe is placed for branch
> > type instructions. If any one finds issues, please let
> > me know.
> >
> > Regards
> > Madhvesh

I would be a good defensive check to include bxj in the first switch
case. The goto's can also be replaces with returns in case you only
intend to do a 'return ret' in the 'kprobe_out' label.

- Abhishek Sagar