power: supply: max17042: extend help/description

Reorganize the Kconfig driver description and mention all supported
models.  This helps when choosing drivers for given system.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/Kconfig

@@ -381,7 +381,7 @@ config BATTERY_MAX17040
 	  Driver can be build as a module (max17040_battery).
 
 config BATTERY_MAX17042
-	tristate "Maxim MAX17042/17047/17050/8997/8966 Fuel Gauge"
+	tristate "Maxim MAX17042/17047/17050/8997/8966 family Fuel Gauge"
 	depends on I2C
 	select REGMAP_I2C
 	help
@@ -389,8 +389,11 @@ config BATTERY_MAX17042
 	  in handheld and portable equipment. The MAX17042 is configured
 	  to operate with a single lithium cell. MAX8997 and MAX8966 are
 	  multi-function devices that include fuel gauages that are compatible
-	  with MAX17042. This driver also supports max17047/50 chips which are
-	  improved version of max17042.
+	  with MAX17042.
+	  Supported devices: max8966, max8997, max17042, max17047, max17050,
+	  max17055, max77693, max77849.
+
+	  Driver can be build as a module (max17042_battery).
 
 config BATTERY_MAX1721X
 	tristate "MAX17211/MAX17215 standalone gas-gauge"