Enable some more speed features on speed 0 to 2

Enable some more speed features on speed 0 to 2

Performance:
| SPD_SET | TESTSET | AVG_PSNR | OVR_PSNR |  SSIM   | ENC_T |
|---------|---------|----------|----------|---------|-------|
|    0    | hdres2  | +0.034%  | +0.030%  | +0.033% | -3.7% |
|    0    | lowres2 | +0.012%  | +0.017%  | +0.044% | -2.1% |
|    0    | midres2 | +0.030%  | +0.035%  | +0.060% | -1.9% |
|---------|---------|----------|----------|---------|-------|
|    1    | hdres2  | +0.027%  | +0.036%  | +0.030% | -2.7% |
|    1    | lowres2 | -0.006%  | -0.002%  | +0.006% | -1.0% |
|    1    | midres2 | -0.006%  | -0.012%  | -0.010% | -1.0% |
|---------|---------|----------|----------|---------|-------|
|    2    | hdres2  | -0.006%  | -0.001%  | -0.020% | -2.4% |
|    2    | lowres2 | -0.010%  | -0.015%  | -0.001% | -0.9% |
|    2    | midres2 | +0.006%  | -0.005%  | +0.009% | -1.0% |

STATS_CHANGED

Change-Id: I1431ac07215bb844739a410697387b9aead82792