rtw88: 8821c: Enable TX report for management frames

Without this setting, hardware would not report to driver even if
management frames are transmitted successfully. So we fix it.
Signed-off-by: Po-Hao Huang <phhuang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220407095858.46807-5-pkshih@realtek.com

drivers/net/wireless/realtek/rtw88/rtw8821c_table.c

@@ -13,7 +13,7 @@ static const u32 rtw8821c_mac[] = {
 	0x04F, 0x00000001,
 	0x029, 0x000000F9,
 	0x420, 0x00000080,
-	0x421, 0x0000000F,
+	0x421, 0x0000001F,
 	0x428, 0x0000000A,
 	0x429, 0x00000010,
 	0x430, 0x00000000,