mt76: Add paragraphs to describe the config symbols fully

Update the help text to fix a checkpatch warning:

WARNING: please write a paragraph that describes the config symbol fully
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7603/Kconfig

@@ -5,6 +5,8 @@ config MT7603E
 	depends on MAC80211
 	depends on PCI
 	help
-	  This adds support for MT7603E wireless PCIe devices and the WLAN core on
-	  MT7628/MT7688 SoC devices
+	  This adds support for MT7603E wireless PCIe devices and the WLAN core
+	  on MT7628/MT7688 SoC devices. This family supports IEEE 802.11n 2x2
+	  to 300Mbps PHY rate
 
+	  To compile this driver as a module, choose M here.

drivers/net/wireless/mediatek/mt76/mt7615/Kconfig

@@ -5,4 +5,9 @@ config MT7615E
 	depends on MAC80211
 	depends on PCI
 	help
-	  This adds support for MT7615-based wireless PCIe devices.
+	  This adds support for MT7615-based wireless PCIe devices,
+	  which support concurrent dual-band operation at both 5GHz
+	  and 2.4GHz, IEEE 802.11ac 4x4:4SS 1733Mbps PHY rate, wave2
+	  MU-MIMO up to 4 users/group and 160MHz channels.
+
+	  To compile this driver as a module, choose M here.

drivers/net/wireless/mediatek/mt76/mt76x0/Kconfig

@@ -10,7 +10,11 @@ config MT76x0U
 	depends on MAC80211
 	depends on USB
 	help
-	  This adds support for MT7610U-based wireless USB dongles.
+	  This adds support for MT7610U-based wireless USB 2.0 dongles,
+	  which comply with IEEE 802.11ac standards and support 1x1
+	  433Mbps PHY rate.
+
+	  To compile this driver as a module, choose M here.
 
 config MT76x0E
 	tristate "MediaTek MT76x0E (PCIe) support"
@@ -18,4 +22,8 @@ config MT76x0E
 	depends on MAC80211
 	depends on PCI
 	help
-	  This adds support for MT7610/MT7630-based wireless PCIe devices.
+	  This adds support for MT7610/MT7630-based wireless PCIe devices,
+	  which comply with IEEE 802.11ac standards and support 1x1
+	  433Mbps PHY rate.
+
+	  To compile this driver as a module, choose M here.

drivers/net/wireless/mediatek/mt76/mt76x2/Kconfig

@@ -8,8 +8,12 @@ config MT76x2E
 	select MT76x2_COMMON
 	depends on MAC80211
 	depends on PCI
-	---help---
-	  This adds support for MT7612/MT7602/MT7662-based wireless PCIe devices.
+	help
+	  This adds support for MT7612/MT7602/MT7662-based wireless PCIe
+	  devices, which comply with IEEE 802.11ac standards and support
+	  2SS to 866Mbit/s PHY rate.
+
+	  To compile this driver as a module, choose M here.
 
 config MT76x2U
 	tristate "MediaTek MT76x2U (USB) support"
@@ -18,4 +22,8 @@ config MT76x2U
 	depends on MAC80211
 	depends on USB
 	help
-	  This adds support for MT7612U-based wireless USB dongles.
+	  This adds support for MT7612U-based wireless USB 3.0 dongles,
+	  which comply with IEEE 802.11ac standards and support 2SS to
+	  866Mbit/s PHY rate.
+
+	  To compile this driver as a module, choose M here.