OMAP3: rx51_defconfig: add twl4030 to rx51 default configuration

twl4030 watchdog will be compiled as a module by default.
Signed-off-by: NAtal Shargorodsky <ext-atal.shargorodsky@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/configs/rx51_defconfig

@@ -1006,6 +1006,7 @@ CONFIG_WATCHDOG=y
 #
 # CONFIG_SOFT_WATCHDOG is not set
 CONFIG_OMAP_WATCHDOG=m
+CONFIG_TWL4030_WATCHDOG=m
 
 #
 # USB-based Watchdog Cards