input: Add STMPE keypad driver

Add an input driver for the keypad on STMPE I/O expanders.  This driver
uses the common support provided by the STMPE MFD driver.

Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index b171f63..9cc488d2 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -395,6 +395,16 @@
 	  To compile this driver as a module, choose M here: the
 	  module will be called sh_keysc.
 
+config KEYBOARD_STMPE
+	tristate "STMPE keypad support"
+	depends on MFD_STMPE
+	help
+	  Say Y here if you want to use the keypad controller on STMPE I/O
+	  expanders.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called stmpe-keypad.
+
 config KEYBOARD_DAVINCI
 	tristate "TI DaVinci Key Scan"
 	depends on ARCH_DAVINCI_DM365