mesa: added _mesa_print_swizzle() debugging helper
diff --git a/src/mesa/shader/prog_print.h b/src/mesa/shader/prog_print.h
index 36c47e0..3cdb1b1 100644
--- a/src/mesa/shader/prog_print.h
+++ b/src/mesa/shader/prog_print.h
@@ -44,6 +44,9 @@
 _mesa_swizzle_string(GLuint swizzle, GLuint negateBase, GLboolean extended);
 
 extern void
+_mesa_print_swizzle(GLuint swizzle);
+
+extern void
 _mesa_print_alu_instruction(const struct prog_instruction *inst,
                             const char *opcode_string, GLuint numRegs);