net: Change skb_get_rxhash to skb_get_hash

Changing name of function as part of making the hash in skbuff to be
generic property, not just for receive path.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/macvtap.c
Simple merge

diff --cc drivers/net/tun.c
Simple merge

diff --cc drivers/net/vxlan.c
Simple merge

diff --cc include/linux/skbuff.h
Simple merge

diff --cc net/core/dev.c
Simple merge

diff --cc net/core/flow_dissector.c
Simple merge

diff --cc net/packet/af_packet.c
Simple merge

diff --cc net/sched/cls_flow.c
Simple merge

diff --cc net/sched/em_meta.c
Simple merge

diff --cc net/sched/sch_fq.c
Simple merge