ASoC: Intel: cht_bsw_rt5672: remove useless test

For some reason we test if the machine is passed as a parameter before
fixing up the codec name. This is unnecessary, generates false
positives in static analysis tools and done only in this machine
driver, remove and adjust indentation.

Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>