ARM: multi_v7_defconfig: Enable Broadcom Kona watchdog

In order to get rid of bcm_defconfig, enable this driver which is needed
by some Broadcom SoCs based on the Kona architecture to reboot.

Acked-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index 9127ebf..296ae3d 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -458,6 +458,7 @@
 CONFIG_DIGICOLOR_WATCHDOG=y
 CONFIG_BCM2835_WDT=y
 CONFIG_BCM7038_WDT=m
+CONFIG_BCM_KONA_WDT=y
 CONFIG_MFD_AS3711=y
 CONFIG_MFD_AS3722=y
 CONFIG_MFD_ATMEL_FLEXCOM=y