.probe() is quite busy for this driver; make it cleaner by moving the
chip verification to a dedicated function.
Signed-off-by: NDaniel Scally <djrscally@gmail.com>
Acked-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@kernel.org>