add camera pipeline benchmark for auto schedule
add camera pipeline benchmark for auto schedule

Signed-off-by: Uday Bondhugula <udayb@iisc.ac.in>

Former-commit-id: 20f15a0c7055a7532f11f83307ca14f189cdbf27
darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide