sdm: Remove decimation support

- Remove decimation disable property from make file.
- Compare vertical and horizontal decimation with exponent value
  0(2^0=1) because exponent value 1 indicates decimation value 2^1=2.

Change-Id: I88f7cbf76b76044ee49db10a211c4cde6019925a
CRs-Fixed: 2359011
2 files changed