Set hip version correctly

[ROCm/clr commit: f1f01ceb63]

projects/clr/hipamd/CMakeLists.txt

@@ -33,7 +33,7 @@ execute_process(COMMAND git show -s --format=@%ct
     OUTPUT_VARIABLE HIP_VERSION_PATCH
     OUTPUT_STRIP_TRAILING_WHITESPACE)
 
-set(HIP_VERSION $HIP_VERSION_MAJOR.$HIP_VERSION_MINOR.$HIP_VERSION_PATCH)
+set(HIP_VERSION ${HIP_VERSION_MAJOR}.${HIP_VERSION_MINOR}.${HIP_VERSION_PATCH})
 add_to_config(_versionInfo HIP_VERSION_MAJOR)
 add_to_config(_versionInfo HIP_VERSION_MINOR)
 add_to_config(_versionInfo HIP_VERSION_PATCH)