ktime: Cleanup ktime_set() usage

ktime_set(S,N) was required for the timespec storage type and is still
useful for situations where a Seconds and Nanoseconds part of a time value
needs to be converted. For anything where the Seconds argument is 0, this
is pointless and can be replaced with a simple assignment.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>

net/mac802154/util.c

@@ -80,11 +80,11 @@ void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb,
 
 		if (skb->len > max_sifs_size)
 			hrtimer_start(&local->ifs_timer,
-				      ktime_set(0, hw->phy->lifs_period * NSEC_PER_USEC),
+				      hw->phy->lifs_period * NSEC_PER_USEC,
 				      HRTIMER_MODE_REL);
 		else
 			hrtimer_start(&local->ifs_timer,
-				      ktime_set(0, hw->phy->sifs_period * NSEC_PER_USEC),
+				      hw->phy->sifs_period * NSEC_PER_USEC,
 				      HRTIMER_MODE_REL);
 	} else {
 		ieee802154_wake_queue(hw);