mfd: intel-lpss: Add Intel Cannonlake PCI IDs

Intel Cannonlake PCH has the same LPSS than Intel Kabylake. Add the new IDs
to the list of supported devices.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>