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>
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 451f899..c929760 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -429,8 +429,8 @@ static int dmatest_func(void *data)
 	int			dst_cnt;
 	int			i;
 	ktime_t			ktime, start, diff;
-	ktime_t			filltime = ktime_set(0, 0);
-	ktime_t			comparetime = ktime_set(0, 0);
+	ktime_t			filltime = 0;
+	ktime_t			comparetime = 0;
 	s64			runtime = 0;
 	unsigned long long	total_len = 0;
 	u8			align = 0;