ASoC: Intel: Fix BYTCR firmware name

BYTCR DSP firmware is in intel/ subdirectory. See linux-firmware.git
commit d562a3b63632 ("linux-firmware: add sst audio firmware for baytrail
platforms").

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>