Add branch name for spirv translator in .travis.xml

Author: fzou1

.travis.yml

@@ -32,7 +32,7 @@ before-install:
       libclang-cpp${LLVM_VERSION}-dev
 
 install:
-  - git clone https://github.com/KhronosGroup/SPIRV-LLVM-Translator.git spirv-llvm-translator
+  - git clone https://github.com/KhronosGroup/SPIRV-LLVM-Translator.git spirv-llvm-translator -b llvm_release_${LLVM_VERSION}0
   - mkdir spirv-llvm-translator/build && cd spirv-llvm-translator/build
   - cmake .. -DCMAKE_INSTALL_PREFIX=./install -DBUILD_SHARED_LIBS=ON -DLLVM_BUILD_TOOLS=ON -DCMAKE_BUILD_TYPE=${BUILD_TYPE}
   - make -j`nproc` && make install