[WATCHDOG] support for max63xx watchdog timer chips

This driver adds support for the max63{69,70,71,72,73,74} family of
watchdog timer chips.

It has been tested on an Arcom Zeus (max6369).

Signed-off-by: Marc Zyngier <maz@misterjones.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
index 2fd1594..5e3cb95 100644
--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
@@ -143,4 +143,5 @@
 # Architecture Independant
 obj-$(CONFIG_WM831X_WATCHDOG) += wm831x_wdt.o
 obj-$(CONFIG_WM8350_WATCHDOG) += wm8350_wdt.o
+obj-$(CONFIG_MAX63XX_WATCHDOG) += max63xx_wdt.o
 obj-$(CONFIG_SOFT_WATCHDOG) += softdog.o