ASoC: Intel: Skylake: Fix DMA control config size

DMA control IPC structure wrong config array length,
So corrected the size

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>