dri: add offset attribute and bump version of EGLImage extensions.

Offset is useful for buffer sharing with other components, so add
it to queryImage attributes.

Signed-off-by: Chuanbo Weng <chuanbo.weng@intel.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

include/GL/internal/dri_interface.h

@@ -1094,7 +1094,7 @@ struct __DRIdri2ExtensionRec {
  * extensions.
  */
 #define __DRI_IMAGE "DRI_IMAGE"
-#define __DRI_IMAGE_VERSION 12
+#define __DRI_IMAGE_VERSION 13
 
 /**
  * These formats correspond to the similarly named MESA_FORMAT_*
@@ -1208,6 +1208,8 @@ struct __DRIdri2ExtensionRec {
 #define __DRI_IMAGE_ATTRIB_FOURCC       0x2008 /* available in versions 11 */
 #define __DRI_IMAGE_ATTRIB_NUM_PLANES   0x2009 /* available in versions 11 */
 
+#define __DRI_IMAGE_ATTRIB_OFFSET 0x200A /* available in versions 13 */
+
 enum __DRIYUVColorSpace {
    __DRI_YUV_COLOR_SPACE_UNDEFINED = 0,
    __DRI_YUV_COLOR_SPACE_ITU_REC601 = 0x327F,