iwlwifi: add -21.ucode to WHENCE

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Kyle McMartin <kyle@kernel.org>

WHENCE

@@ -897,12 +897,24 @@ Version: 25.30.13.0
 File: iwlwifi-7265D-16.ucode
 Version 16.242414.0
 
+File: iwlwifi-7265D-21.ucode
+Version 21.302800.0
+
+File: iwlwifi-3168-21.ucode
+Version 21.302800.0
+
 File: iwlwifi-8000C-13.ucode
 Version: 25.30.13.0
 
 File: iwlwifi-8000C-16.ucode
 Version 16.242414.0
 
+File: iwlwifi-8000C-21.ucode
+Version 21.302800.0
+
+File: iwlwifi-8265-21.ucode
+Version 21.302800.0
+
 Licence: Redistributable. See LICENCE.iwlwifi_firmware for details
 
 Also available from http://wireless.kernel.org/en/users/Drivers/iwlwifi#Firmware