add queries for cl_khr_integer_dot_product (#137)

diff --git a/include/CL/opencl.hpp b/include/CL/opencl.hpp
index 222b162..75b9c92 100644
--- a/include/CL/opencl.hpp
+++ b/include/CL/opencl.hpp
@@ -1521,6 +1521,10 @@
 CL_HPP_DECLARE_PARAM_TRAITS_(cl_device_info, CL_DEVICE_PCI_BUS_INFO_KHR, cl_device_pci_bus_info_khr)
 #endif
 
+#if defined(cl_khr_integer_dot_product)
+CL_HPP_DECLARE_PARAM_TRAITS_(cl_device_info, CL_DEVICE_INTEGER_DOT_PRODUCT_CAPABILITIES_KHR, cl_device_integer_dot_product_capabilities_khr)
+#endif
+
 #ifdef CL_PLATFORM_ICD_SUFFIX_KHR
 CL_HPP_DECLARE_PARAM_TRAITS_(cl_platform_info, CL_PLATFORM_ICD_SUFFIX_KHR, string)
 #endif