net: dsa: mt7530: fix tristate and help description

Fix description for tristate and help sections which include inaccurate
information.
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Link: https://lore.kernel.org/r/20230126190110.9124-1-arinc.unal@arinc9.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/dsa/Kconfig

@@ -35,12 +35,13 @@ config NET_DSA_LANTIQ_GSWIP
 	  the xrx200 / VR9 SoC.
 
 config NET_DSA_MT7530
-	tristate "MediaTek MT753x and MT7621 Ethernet switch support"
+	tristate "MediaTek MT7530 and MT7531 Ethernet switch support"
 	select NET_DSA_TAG_MTK
 	select MEDIATEK_GE_PHY
 	help
-	  This enables support for the MediaTek MT7530, MT7531, and MT7621
-	  Ethernet switch chips.
+	  This enables support for the MediaTek MT7530 and MT7531 Ethernet
+	  switch chips. Multi-chip module MT7530 in MT7621AT, MT7621DAT,
+	  MT7621ST and MT7623AI SoCs is supported.
 
 config NET_DSA_MV88E6060
 	tristate "Marvell 88E6060 ethernet switch chip support"