realtek: dsa: rtl839x: Fix incorrect drop counter names

The counter names "CFM" and "VLAN_IGR_FLTR" were not separated by a comma
in the `rtl839x_drop_cntr` array. As result, these two headers were merged
to a single header "CFMVLAN_IGR_FLTR" and everything after that was shifted
by one. The last name (for the 45th counter) was also not defined and was
therefore accessing data outside the array.

Fixes: 1cfd45ae0bad ("realtek: Add debugfs support for RTL9300")
Signed-off-by: Sven Eckelmann <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/20905
Signed-off-by: Robert Marko <[email protected]>

target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/debugfs.c

@@ -52,7 +52,7 @@ const char *rtl838x_drop_cntr[] = {
 
 const char *rtl839x_drop_cntr[] = {
 	"ALE_TX_GOOD_PKTS", "ERROR_PKTS", "EGR_ACL_DROP", "EGR_METER_DROP",
-	"OAM", "CFM" "VLAN_IGR_FLTR", "VLAN_ERR",
+	"OAM", "CFM", "VLAN_IGR_FLTR", "VLAN_ERR",
 	"INNER_OUTER_CFI_EQUAL_1", "VLAN_TAG_FORMAT", "SRC_PORT_SPENDING_TREE", "INBW",
 	"RMA", "HW_ATTACK_PREVENTION", "PROTO_STORM", "MCAST_SA",
 	"IGR_ACL_DROP", "IGR_METER_DROP", "DFLT_ACTION_FOR_MISS_ACL_AND_C2SC", "NEW_SA",