[PATCH,AVR] Fix PR27386 wrong code generated.

[Anatoly Sokolov]

Hi Andy.

> 
> 
> 2008-06-01  Andy Hutchinson  <hutchinsonandy@aim.com>
> 
>    PR target/27386
>    * config/avr/avr.h: (PUSH_ROUNDING): Remove.
>

Please, apply on mainline.

Anatoly.