enable interoperability with ocl-icd

according to spec we have to export clGetPlatformInfo API entry point
for Installable Client Driver (ICD) to work.

on Linux it requires extra flag for linker to avoid loop in dispatch
table.

Change-Id: I2f6cf7da10e3a346c363d7bc94d9eff1eeb64895

runtime/CMakeLists.txt

@@ -404,6 +404,9 @@ if(${GENERATE_EXECUTABLE})
 	  set_property(TARGET ${NEO_DYNAMIC_LIB_NAME}
 		APPEND_STRING PROPERTY LINK_FLAGS " -Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/dll/linux/ocl.exports"
 	  )
+	  set_property(TARGET ${NEO_DYNAMIC_LIB_NAME}
+		APPEND_STRING PROPERTY LINK_FLAGS " -Wl,-Bsymbolic"
+	  )
 	endif (UNIX)
 
 	set_target_properties(${NEO_DYNAMIC_LIB_NAME} PROPERTIES

runtime/dll/linux/ocl.exports

@@ -24,6 +24,7 @@
   global: 
       clGetExtensionFunctionAddress;
       clIcdGetPlatformIDsKHR;
+      clGetPlatformInfo;
       GTPin_Init;
   local: *;
 };