Add SPIR-V 1.2 support, for OpenCL 2.2
diff --git a/source/binary.cpp b/source/binary.cpp
index cdd2eab..a803def 100644
--- a/source/binary.cpp
+++ b/source/binary.cpp
@@ -27,7 +27,7 @@
 #include "ext_inst.h"
 #include "opcode.h"
 #include "operand.h"
-#include "spirv/1.1/spirv.h"
+#include "spirv/1.2/spirv.h"
 #include "spirv_constant.h"
 #include "spirv_endian.h"