pan/bi: Hook up cube instructions packing

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7408>
diff --git a/src/panfrost/bifrost/compiler.h b/src/panfrost/bifrost/compiler.h
index 1cb936cf..57ca531 100644
--- a/src/panfrost/bifrost/compiler.h
+++ b/src/panfrost/bifrost/compiler.h
@@ -233,6 +233,12 @@
          * the second, it takes x itself. */
         BI_SPECIAL_EXP2_LOW,
         BI_SPECIAL_IABS,
+
+        /* cubemap coordinates extraction helpers */
+        BI_SPECIAL_CUBEFACE1,
+        BI_SPECIAL_CUBEFACE2,
+        BI_SPECIAL_CUBE_SSEL,
+        BI_SPECIAL_CUBE_TSEL,
 };
 
 struct bi_bitwise {