drm/displayid: re-align data block macros

Make the values easier to read. Also add DisplayID Structure version and
revision information (this is different from the spec version).
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/b73d3ff2d5e4b23834ed0005186c5cf3a9de5c9e.1630419362.git.jani.nikula@intel.com

include/drm/drm_displayid.h

@@ -26,6 +26,7 @@
 
 struct edid;
 
+/* DisplayID Structure v1r2 Data Blocks */
 #define DATA_BLOCK_PRODUCT_ID			0x00
 #define DATA_BLOCK_DISPLAY_PARAMETERS		0x01
 #define DATA_BLOCK_COLOR_CHARACTERISTICS	0x02
@@ -44,10 +45,10 @@ struct edid;
 #define DATA_BLOCK_DISPLAY_INTERFACE		0x0f
 #define DATA_BLOCK_STEREO_DISPLAY_INTERFACE	0x10
 #define DATA_BLOCK_TILED_DISPLAY		0x12
-#define DATA_BLOCK_CTA 0x81
-
 #define DATA_BLOCK_VENDOR_SPECIFIC		0x7f
+#define DATA_BLOCK_CTA				0x81
 
+/* DisplayID Structure v1r2 Product Type */
 #define PRODUCT_TYPE_EXTENSION			0
 #define PRODUCT_TYPE_TEST			1
 #define PRODUCT_TYPE_PANEL			2