ASoC: Intel: Skylake: Add library loading support

The library load is added as one of the ops in skl_dsp_fw_ops().

The manifest load gives the files to be loaded which are loaded during
the fw_init()

Signed-off-by: Ramesh Babu <ramesh.babu@intel.com>
Signed-off-by: Kranthi G <gudishax.kranthikumar@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>