lantiq-xrx200: add support for AVM FRITZ!Box 7362 SL

Flash instructions in the OpenWRT Commit: https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=eae6cac6a30b95bef04d033ed8a303b7e35a078b

docs/user/supported_devices.rst

@@ -250,6 +250,7 @@ lantiq-xrx200
 
 * AVM
 
+  - FRITZ!Box 7362 SL [#eva_ramboot]_ [#lan_as_wan]_
   - FRITZ!Box 7412 [#eva_ramboot]_
 
 lantiq-xway

targets/lantiq-xrx200

+device('avm-fritz-box-7362-sl', 'avm_fritz7362sl', {
+        factory = false,
+})
+
 device('avm-fritz-box-7412', 'avm_fritz7412', {
         factory = false,
 })