iwlwifi: bump FW API to 62 for AX devices

Start supporting API version 62 for AX devices.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210210172142.8c2e4ebd947e.Id1be235baad632e9ba1c07590e62184fc2f07c04@changeid


Signed-off-by: Luca Coelho <luciano.coelho@intel.com>