This follows the same rationale as xf86-input-synaptics-glibc-2.20.patch
to allow building with glibc-2.20.
diff -u -r xf86-video-openchrome-0.2.906.old/src/via_3d.h xf86-video-openchrome-0.2.906/src/via_3d.h
--- xf86-video-openchrome-0.2.906.old/src/via_3d.h	2014-11-23 14:04:58.000000000 +0100
+++ xf86-video-openchrome-0.2.906/src/via_3d.h	2014-11-23 14:18:37.000000000 +0100
@@ -24,6 +24,7 @@
 #ifndef VIA_3D_H
 #define VIA_3D_H
 
+#include "xorg-server.h"
 #include "xf86.h"
 #include "via_dmabuffer.h"
 
diff -u -r xf86-video-openchrome-0.2.906.old/src/via_driver.h xf86-video-openchrome-0.2.906/src/via_driver.h
--- xf86-video-openchrome-0.2.906.old/src/via_driver.h	2014-11-23 14:04:58.000000000 +0100
+++ xf86-video-openchrome-0.2.906/src/via_driver.h	2014-11-23 14:21:43.000000000 +0100
@@ -35,6 +35,7 @@
 #endif
 
 #include "vgaHW.h"
+#include "xorg-server.h"
 #include "xf86.h"
 
 #if GET_ABI_MAJOR(ABI_VIDEODRV_VERSION) < 6 
diff -u -r xf86-video-openchrome-0.2.906.old/src/via_timing.h xf86-video-openchrome-0.2.906/src/via_timing.h
--- xf86-video-openchrome-0.2.906.old/src/via_timing.h	2014-11-23 14:04:58.000000000 +0100
+++ xf86-video-openchrome-0.2.906/src/via_timing.h	2014-11-23 14:20:50.000000000 +0100
@@ -25,6 +25,7 @@
 #ifndef _TIMING_H_
 #define _TIMING_H_
 
+#include "xorg-server.h"
 #include "xf86.h"
 
 /* Aspect ratio not CVT standard */