ASoC: Intel: Bxt: Parse UUIDs once

The firmware manifest contains UUIDs which needs to be passed only once.

So use the newly introduced is_first_boot flag to distinguish and parse
these only once on bxt platform as well.

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