wifi: iwlwifi: don't load old firmware for 22000

The earliest firmware released for these products is with
API version 50, so there's no point in trying to load any
versions before that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230621130443.768186c0475d.I7de717072221712176a3085d71c8018ae0348db8@changeid


Signed-off-by: Johannes Berg <johannes.berg@intel.com>