mfd: dbx500-prcmu: Add watchdog ID definitions

Add definition of watchdog IDs to be used by ux500_wdt driver.
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

include/linux/mfd/dbx500-prcmu.h

@@ -146,6 +146,18 @@ enum prcmu_clock {
 	PRCMU_DSI2ESCCLK,
 };
 
+/**
+ * enum prcmu_wdog_id - PRCMU watchdog IDs
+ * @PRCMU_WDOG_ALL: use all timers
+ * @PRCMU_WDOG_CPU1: use first CPU timer only
+ * @PRCMU_WDOG_CPU2: use second CPU timer conly
+ */
+enum prcmu_wdog_id {
+	PRCMU_WDOG_ALL = 0x00,
+	PRCMU_WDOG_CPU1 = 0x01,
+	PRCMU_WDOG_CPU2 = 0x02,
+};
+
 /**
  * enum ape_opp - APE OPP states definition
  * @APE_OPP_INIT: