net: dsa: tag_rtl8_4: fix typo in modalias name

DSA_TAG_PROTO_RTL8_4L is not defined. It should be
DSA_TAG_PROTO_RTL8_4T.

Fixes: cd87fecd ("net: dsa: tag_rtl8_4: add rtl8_4t trailing variant")
Reported-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220309175641.12943-1-luizluca@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

net/dsa/tag_rtl8_4.c

@@ -247,7 +247,7 @@ static const struct dsa_device_ops rtl8_4t_netdev_ops = {
 
 DSA_TAG_DRIVER(rtl8_4t_netdev_ops);
 
-MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_RTL8_4L);
+MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_RTL8_4T);
 
 static struct dsa_tag_driver *dsa_tag_drivers[] = {
 	&DSA_TAG_DRIVER_NAME(rtl8_4_netdev_ops),