Update Linux to v5.4.148

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz

Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index 3fc38d1..19af0ef 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -499,6 +499,7 @@
 	}
 
 	skb->dev = vport->dev;
+	skb->tstamp = 0;
 	vport->ops->send(skb);
 	return;