[PKT_SCHED]: Change default clock source to gettimeofday

The default of using jiffies is very bad and results in
underutilization except with very low bandwidth.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sched/Kconfig

@@ -44,7 +44,7 @@ if NET_SCHED
 
 choice
 	prompt "Packet scheduler clock source"
-	default NET_SCH_CLK_JIFFIES
+	default NET_SCH_CLK_GETTIMEOFDAY
 	---help---
 	  Packet schedulers need a monotonic clock that increments at a static
 	  rate. The kernel provides several suitable interfaces, each with