[LDC] Fix bug in affine settings in ldc test
[LDC] Fix bug in affine settings in ldc test

- LDC affine parameters were incorrectly being calculated due to
  a misplaced cast of DVP_S16 introduced in commit id:
  3edd5b27e883d4358b883ff7282f0543119fc074

Change-Id: I3cf14bf5065f2fb764fb34cd8ef1f5e6954cb823
Signed-off-by: Jesse Villarreal <4e00601da469561e29ddb39989b66fc960ec77f9@ti.com>

aosp/dvp,aosp/dvp,aosp/dvp,aosp/dvp