Move rocm include directory to the end of the list for include files

Fix compile error.

Before this change, there is compile error in my build computer. The cause is that /opt/rocm/include has an older version of CL header files.
When compiling, we should use header files from this opencl source code folders first.

This fix changes the order of include directories. Search the header files inside this opencl source code folders first.

Change-Id: I3420a634ed9e1b38b8e5201a0a39a36d61f97986

opencl/CMakeLists.txt

@@ -39,7 +39,6 @@ if(USE_COMGR_LIBRARY)
    )
    MESSAGE(STATUS "Code Object Manager found at ${amd_comgr_DIR}.")
 
-  include_directories("$<TARGET_PROPERTY:amd_comgr,INTERFACE_INCLUDE_DIRECTORIES>")
 endif()
 
 
@@ -70,6 +69,10 @@ add_subdirectory(amdocl)
 add_subdirectory(tools/clinfo)
 add_subdirectory(tools/cltrace)
 
+if(USE_COMGR_LIBRARY)
+  include_directories("$<TARGET_PROPERTY:amd_comgr,INTERFACE_INCLUDE_DIRECTORIES>")
+endif()
+
 # get date information based on UTC
 # use the last two digits of year + week number + day in the week as OPENCL_VERSION_GITDATE
 # use the commit date, instead of build date