Input: pxa27x_keypad - rename the driver (was pxa27x_keyboard)

The controller should really be called keypad, and also align
the naming of functions and structures to use "pxa27x_keypad"
as prefix, instead of "pxakbd".

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 0c32762..d5b5f4a 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -260,13 +260,13 @@
 	  module will be called omap-keypad.
 
 config KEYBOARD_PXA27x
-	tristate "PXA27x keyboard support"
+	tristate "PXA27x keypad support"
 	depends on PXA27x
 	help
-	  Enable support for PXA27x matrix keyboard controller
+	  Enable support for PXA27x keypad controller
 
 	  To compile this driver as a module, choose M here: the
-	  module will be called pxa27x_keyboard.
+	  module will be called pxa27x_keypad.
 
 config KEYBOARD_AAED2000
 	tristate "AAED-2000 keyboard"