Add -hexagon-long-calls to the options passed to LLVM.
Add -hexagon-long-calls to the options passed to LLVM.

kgnk/Halide,kgnk/Halide,kgnk/Halide,kgnk/Halide,psuriana/Halide,kgnk/Halide,kgnk/Halide,ronen/Halide,psuriana/Halide,psuriana/Halide,psuriana/Halide,ronen/Halide,psuriana/Halide,kgnk/Halide,kgnk/Halide,ronen/Halide,ronen/Halide,ronen/Halide,psuriana/Halide,ronen/Halide,psuriana/Halide,ronen/Halide,ronen/Halide