* tc-arm.c: Re-arrange prototypes by architecture.

* tc-arm.c: Re-arrange prototypes by architecture.
(insns): Re-arrange instructions by archtitecture.  Pld instruction
is part of ARMv5E.
(tinsns): blx and bkpt are part of ARMv5T.
(do_fp_{ctrl,ldst,ldstm,dyadic,monadic,cmp,from_reg,to_reg}): Rename
to do_fpa_*.  All callers changed.

* tc-arm.c (insns): Add two temporary instructions to handle
ldrd/strd.