[PATCH] MGA DDX: make it possible to find EXA support

[Adam Jackson]

On Sun, 2015-06-21 at 19:50 +0200, Matthew Rezny wrote:
> Newer versions of the xserver stricter requirements on header order 
> which 
> caused the configure tests for EXA support to erroneously fail. Since 
> XAA was 
> already removed from an earlier version of xserver, the configure 
> failure meant 
> no acceleration was possible. Patch configure tests similar to r128.

Pushed, thanks.

- ajax