mfd: atmel-hlcdc: Add Kconfig option description and name

The MFD_ATMEL_HLCDC was first intended to be selected by its sub-devices
but these sub-devices now depends on this option, we thus need to add
a name and a description so that users can see it.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/Kconfig

@@ -60,10 +60,15 @@ config MFD_AAT2870_CORE
 	  functionality of the device.
 
 config MFD_ATMEL_HLCDC
-	tristate
+	tristate "Atmel HLCDC (High-end LCD Controller)"
 	select MFD_CORE
 	select REGMAP_MMIO
 	depends on OF
+	help
+	  If you say yes here you get support for the HLCDC block.
+	  This driver provides common support for accessing the device,
+	  additional drivers must be enabled in order to use the
+	  functionality of the device.
 
 config MFD_BCM590XX
 	tristate "Broadcom BCM590xx PMUs"