OMAP_LDP: Add keypad related configs into defconfig.

Add keypad related configs into omap_ldp_defconfig.
Signed-off-by: Stanley.Miao <stanley.miao@windriver.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/configs/omap_ldp_defconfig

@@ -549,7 +549,16 @@ CONFIG_INPUT_EVDEV=y
 #
 # Input Device Drivers
 #
-# CONFIG_INPUT_KEYBOARD is not set
+CONFIG_INPUT_KEYBOARD=y
+# CONFIG_KEYBOARD_ATKBD is not set
+# CONFIG_KEYBOARD_SUNKBD is not set
+# CONFIG_KEYBOARD_LKKBD is not set
+# CONFIG_KEYBOARD_XTKBD is not set
+# CONFIG_KEYBOARD_NEWTON is not set
+# CONFIG_KEYBOARD_STOWAWAY is not set
+CONFIG_KEYBOARD_TWL4030=y
+# CONFIG_KEYBOARD_LM8323 is not set
+CONFIG_KEYBOARD_GPIO=y
 # CONFIG_INPUT_MOUSE is not set
 # CONFIG_INPUT_JOYSTICK is not set
 # CONFIG_INPUT_TABLET is not set