The core part is misleading since its only purpose to serve Crystal Cove PMIC,
although for couple of different platforms. Merge core part into crc one.

Advantages among others are:
- speed up a compilation and build
- decreasing the code base
- reducing noise in the namespace by making some data static and const
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20220801114211.36267-2-andriy.shevchenko@linux.intel.com