diff -Nur linux-2.6.15.3/drivers/char/watchdog/Makefile linux-2.6.15.3-openwrt/drivers/char/watchdog/Makefile
--- linux-2.6.15.3/drivers/char/watchdog/Makefile	2006-02-22 10:04:18.596278000 -0800
+++ linux-2.6.15.3-openwrt/drivers/char/watchdog/Makefile	2006-02-22 10:06:21.400960000 -0800
@@ -71,5 +71,8 @@
 
 # SPARC64 Architecture
 
+# Aruba Architecture
+obj-$(CONFIG_MACH_ARUBA) += wdt_merlot.o
+
 # Architecture Independant
 obj-$(CONFIG_SOFT_WATCHDOG) += softdog.o