intel: don't forget to include config.h in bufmgr code.

Thanks to airlied for catching this.

libdrm/intel/intel_bufmgr.c

@@ -25,6 +25,10 @@
  *
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <string.h>
 #include <stdlib.h>
 #include <stdint.h>

libdrm/intel/intel_bufmgr_fake.c

@@ -34,6 +34,10 @@
  * the bugs in the old texture manager.
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>

libdrm/intel/intel_bufmgr_gem.c

@@ -34,6 +34,10 @@
  *	    Dave Airlie <airlied@linux.ie>
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <xf86drm.h>
 #include <stdio.h>
 #include <stdlib.h>