net: use ktime_get_ns() and ktime_get_real_ns() helpers

ktime_get_ns() replaces ktime_to_ns(ktime_get())

ktime_get_real_ns() replaces ktime_to_ns(ktime_get_real())

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/codel.h b/include/net/codel.h
index fe0eab3..aeee280 100644
--- a/include/net/codel.h
+++ b/include/net/codel.h
@@ -66,7 +66,7 @@
 
 static inline codel_time_t codel_get_time(void)
 {
-	u64 ns = ktime_to_ns(ktime_get());
+	u64 ns = ktime_get_ns();
 
 	return ns >> CODEL_SHIFT;
 }
diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h
index ec030cd..8bbe626 100644
--- a/include/net/pkt_sched.h
+++ b/include/net/pkt_sched.h
@@ -50,7 +50,7 @@
 
 static inline psched_time_t psched_get_time(void)
 {
-	return PSCHED_NS2TICKS(ktime_to_ns(ktime_get()));
+	return PSCHED_NS2TICKS(ktime_get_ns());
 }
 
 static inline psched_tdiff_t