mfd: Add support for WM8320 PMICs

The WM8320 is an integrated power management subsystem providing
voltage regulators, RTC, watchdog and other functionality. The
WM8320 is derived from the WM831x and therefore shares most of
the driver code with the WM831x.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 2aea25b..b0b3e42 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -185,12 +185,12 @@
 	  the functionality of the device.
 
 config MFD_WM831X
-	tristate "Support Wolfson Microelectronics WM831x PMICs"
+	tristate "Support Wolfson Microelectronics WM831x/2x PMICs"
 	select MFD_CORE
 	depends on I2C
 	help
-	  Support for the Wolfson Microelecronics WM831x PMICs.  This
-	  driver provides common support for accessing the device,
+	  Support for the Wolfson Microelecronics WM831x and WM832x PMICs.
+	  This driver provides common support for accessing the device,
 	  additional drivers must be enabled in order to use the
 	  functionality of the device.