ASoC: Intel: Skylake: Fix to use correct macros for the path iteration

In case of playback, for the BE dai source path should be iterated to find
the pipe params. With sink path iterated, this resulted in a loop and kernel
panic with page request failure.
Similar are the cases for Capture and FE dais. Using correct macros to fix
the panic

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>