rtw88: 8822c: add new RFE type 6

A new RFE type 6 of RTL8822CE is released, add it in the RFE type
definition.
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200623072014.31631-1-yhchuang@realtek.com

drivers/net/wireless/realtek/rtw88/rtw8822c.c

@@ -3899,6 +3899,7 @@ static const struct rtw_rfe_def rtw8822c_rfe_defs[] = {
 	[1] = RTW_DEF_RFE(8822c, 0, 0),
 	[2] = RTW_DEF_RFE(8822c, 0, 0),
 	[5] = RTW_DEF_RFE(8822c, 0, 5),
+	[6] = RTW_DEF_RFE(8822c, 0, 0),
 };
 
 static const struct rtw_hw_reg rtw8822c_dig[] = {