[CFL] Reduce arrays used in inspection

Merge cfl_alpha_sign_u and cfl_alpha_sign_v into cfl_alpha_sign,
where:
    cfl_alpha_sign = (cfl_alpha_sign_v << 1) + cfl_alpha_sign_u;

Change-Id: I8c491e37d23f6ef85a33a8b2f8770b7b606d8e0a
3 files changed