[arm, patch] Remove redundant promotion of function arguments

[Geoff Keating]

Eric Botcazou <ebotcazou@libertysurf.fr> writes:

> > This is OK for the mainline, modulo Eric's comments about ChangeLog typos.
> 
> I was unclear: there is twice the same typo in the change to 
> config/sparc/sparc.c.

Plus, there's a typo that breaks bootstrap on rs6000.  I am fixing.

-- 
- Geoffrey Keating <geoffk@geoffk.org>