mtd: spi-nor: intel-spi: Add support for Intel Alder Lake-P SPI serial flash

Intel Alder Lake-P has the same SPI serial flash controller as Alder
Lake-S. Add Alder Lake-P PCI ID to the driver list of supported devices.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20210113101545.71579-1-mika.westerberg@linux.intel.com