This add watchdog driver for broadcom 47xx device.
It uses the ssb subsytem to access embeded watchdog device.

Because the watchdog timeout is very short (about 2s), a soft timer is used
to increase the watchdog period.

Note : A patch for exporting the ssb_watchdog_timer_set will
be submitted on next linux-mips merge. Without this patch it can't 
be build as a module.

Signed-off-by: Aleksandar Radovanovic <biblbroks@sezampro.rs>
Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr>
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -764,6 +764,12 @@ config TXX9_WDT
 	help
 	  Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
 
+config BCM47XX_WDT
+	tristate "Broadcom BCM47xx Watchdog Timer"
+	depends on BCM47XX
+	help
+	  Hardware driver for the Broadcom BCM47xx Watchog Timer.
+
 # PARISC Architecture
 
 # POWERPC Architecture
--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
@@ -105,6 +105,7 @@ obj-$(CONFIG_WDT_RM9K_GPI) += rm9k_wdt.o
 obj-$(CONFIG_SIBYTE_WDOG) += sb_wdog.o
 obj-$(CONFIG_AR7_WDT) += ar7_wdt.o
 obj-$(CONFIG_TXX9_WDT) += txx9wdt.o
+obj-$(CONFIG_BCM47XX_WDT) += bcm47xx_wdt.o
 
 # PARISC Architecture