Add example Makefile config to pipeline

hpvm/test/pipeline/Makefile.config.example

+CUDA_PATH=/usr/local/cuda 
+CUDA_LIB_PATH=/usr/local/cuda/lib64
+OPENCL_PATH=/opt/intelFPGA_pro/18.0/hld/host/linux64
+OPENCL_LIB_PATH=$(OPENCL_PATH)/lib
+
+# NOTE: You may need to configure this based on your root path.
+VISC_SRC_ROOT=$(LLVM_SRC_ROOT)
+
+VISC_BUILD_DIR =$(VISC_SRC_ROOT)/build
+CC = $(VISC_BUILD_DIR)/bin/clang
+PLATFORM_CFLAGS = -I$(LLVM_SRC_ROOT)/include -I$(VISC_BUILD_DIR)/include
+
+CXX = $(VISC_BUILD_DIR)/bin/clang++
+PLATFORM_CXXFLAGS = -I$(LLVM_SRC_ROOT)/include -I$(VISC_BUILD_DIR)/include
+
+LINKER = $(VISC_BUILD_DIR)/bin/clang++
+PLATFORM_LDFLAGS = -lm -lpthread -lrt -lOpenCL -L$(OPENCL_LIB_PATH)
+
+LLVM_LIB_PATH = $(VISC_BUILD_DIR)/lib
+LLVM_BIN_PATH = $(VISC_BUILD_DIR)/bin
+
+OPT = $(LLVM_BIN_PATH)/opt
+LLVM_LINK = $(LLVM_BIN_PATH)/llvm-link
+LLVM_AS = $(LLVM_BIN_PATH)/llvm-as
+LIT = $(LLVM_BIN_PATH)/llvm-lit