st/dri: implement v2 of DRI_ConfigOptions

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

src/gallium/auxiliary/pipe-loader/pipe_loader.c

@@ -34,6 +34,8 @@
 #include "util/xmlconfig.h"
 #include "util/xmlpool.h"
 
+#include <string.h>
+
 #ifdef _MSC_VER
 #include <stdlib.h>
 #define PATH_MAX _MAX_PATH
@@ -107,6 +109,17 @@ pipe_loader_load_options(struct pipe_loader_device *dev)
                        dev->driver_name);
 }
 
+char *
+pipe_loader_get_driinfo_xml(const char *driver_name)
+{
+   char *xml = pipe_loader_drm_get_driinfo_xml(driver_name);
+
+   if (!xml)
+      xml = strdup(gallium_driinfo_xml);
+
+   return xml;
+}
+
 struct pipe_screen *
 pipe_loader_create_screen(struct pipe_loader_device *dev,
                           struct pipe_screen_config *config)