watchdog: Use ResetTimeRemaining for wd_reset

Using this helper method reduces the number of dbus calls made during
each watchdog reset.

Change-Id: I373db3babe03e05fca33eb4dbbbc7c07f95a39ea
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/app/watchdog_service.hpp b/app/watchdog_service.hpp
index e93b7f3..ad92213 100644
--- a/app/watchdog_service.hpp
+++ b/app/watchdog_service.hpp
@@ -15,6 +15,14 @@
 
         using Action = sdbusplus::xyz::openbmc_project::State::server::Watchdog::Action;
 
+        /** @brief Resets the time remaining on the watchdog.
+         *         Equivalent to setTimeRemaining(getInterval()).
+         *         Optionally enables the watchdog.
+         *
+         *  @param[in] enableWatchdog - Should the call also enable the watchdog
+         */
+        void resetTimeRemaining(bool enableWatchdog);
+
         /** @brief Contains a copy of the properties enumerated by the
          *         watchdog service.
          */