Add assert on halide_hexagon_run call.
Add assert on halide_hexagon_run call.

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