msm: watchdog: set expired enable register

The apq8064 has an extra register that needs to be set to enable
a watchdog bite.

Change-Id: Ic7542ededaace97c03a7b26eb49aa72fb6c86d83
Signed-off-by: Joel King <joelking@codeaurora.org>
diff --git a/arch/arm/mach-msm/msm_watchdog.h b/arch/arm/mach-msm/msm_watchdog.h
index 201c2b1..33e9e0c 100644
--- a/arch/arm/mach-msm/msm_watchdog.h
+++ b/arch/arm/mach-msm/msm_watchdog.h
@@ -19,6 +19,7 @@
 	/* bark timeout in ms */
 	unsigned int bark_time;
 	bool has_secure;
+	bool needs_expired_enable;
 };
 
 #ifdef CONFIG_MSM_WATCHDOG