[Xorg-driver-geode] XF86 video Geode FTBFS against Xserver 1.15

[Martin-Éric Racine]

As reported via Debian:

The Geode driver fails to build against xserver-xorg-dev 1.15

> geode_dcon.c: In function 'dcon_init':
> geode_dcon.c:149:5: error: implicit declaration of function 'xf86SetModeDefaultName' [-Werror=implicit-function-
declaration]
>      xf86SetModeDefaultName(pGeode->panelMode);
>      ^
> geode_dcon.c:149:5: warning: nested extern declaration of 'xf86SetModeDefaultName' [-Wnested-externs]
> cc1: some warnings being treated as errors
> make[3]: *** [geode_dcon.lo] Error 1

Patches are welcome.

Martin-Éric