Fix cppcheck style warnings, align headers and code and remove useless
prototypes.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200813200147.61990-14-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>