Add a VP_MAX_OPCODE entry to allow engines with internal opcodes to
place them sensibly.
diff --git a/src/mesa/shader/nvvertprog.h b/src/mesa/shader/nvvertprog.h
index ca9930a..17646e3 100644
--- a/src/mesa/shader/nvvertprog.h
+++ b/src/mesa/shader/nvvertprog.h
@@ -66,7 +66,9 @@
    VP_OPCODE_SLT,
    VP_OPCODE_SUB,
    VP_OPCODE_SWZ,		/* ARB only */
-   VP_OPCODE_XPD		/* ARB only */
+   VP_OPCODE_XPD,		/* ARB only */
+
+   VP_MAX_OPCODE
 };