Bionic update to v4.14.7 stable release

SRU Justification

    Impact:
       The upstream process for stable tree updates is quite similar
       in scope to the Ubuntu SRU process, e.g., each patch has to
       demonstrably fix a bug, and each patch is vetted by upstream
       by originating either directly from a mainline/stable Linux tree or
       a minimally backported form of that patch. The v4.14.7 upstream stable
       patch set is now available. It should be included in the Ubuntu
       kernel as well.

       git://git.kernel.org/

    TEST CASE: TBD

       The following patches from the v4.14.7 stable release shall be applied:

net: qmi_wwan: add Quectel BG96 2c7c:0296
net: realtek: r8169: implement set_link_ksettings()
s390/qeth: fix early exit from error path
tipc: fix memory leak in tipc_accept_from_sock()
vhost: fix skb leak in handle_rx()
rds: Fix NULL pointer dereference in __rds_rdma_map
sit: update frag_off info
tcp: add tcp_v4_fill_cb()/tcp_v4_restore_cb()
packet: fix crash in fanout_demux_rollover()
net/packet: fix a race in packet_bind() and packet_notifier()
tcp: remove buggy call to tcp_v6_restore_cb()
usbnet: fix alignment for frames with no ethernet header
net: remove hlist_nulls_add_tail_rcu()
stmmac: reset last TSO segment size after device open
tcp/dccp: block bh before arming time_wait timer
s390/qeth: build max size GSO skbs on L2 devices
s390/qeth: fix thinko in IPv4 multicast address tracking
s390/qeth: fix GSO throughput regression
tcp: use IPCB instead of TCP_SKB_CB in inet_exact_dif_match()
tipc: call tipc_rcv() only if bearer is up in tipc_udp_recv()
tcp: use current time in tcp_rcv_space_adjust()
net: sched: cbq: create block for q->link.block
tap: free skb if flags error
tcp: when scheduling TLP, time of RTO should account for current ACK
tun: free skb in early errors
net: ipv6: Fixup device for anycast routes during copy
tun: fix rcu_read_lock imbalance in tun_build_skb
net: accept UFO datagrams from tuntap and packet
net: openvswitch: datapath: fix data type in queue_gso_packets
cls_bpf: don't decrement net's refcount when offload fails
sctp: use right member as the param of list_for_each_entry
ipmi: Stop timers before cleaning up the module
usb: gadget: ffs: Forbid usb_ep_alloc_request from sleeping
fcntl: don't cap l_start and l_end values for F_GETLK64 in compat syscall
fix kcm_clone()
KVM: arm/arm64: vgic-its: Preserve the revious read from the pending table
kbuild: do not call cc-option before KBUILD_CFLAGS initialization
powerpc/powernv/idle: Round up latency and residency values
ipvlan: fix ipv6 outbound device
ide: ide-atapi: fix compile error with defining macro DEBUG
blk-mq: Avoid that request queue removal can trigger list corruption
nvmet-rdma: update queue list during ib_device removal
audit: Allow auditd to set pid to 0 to end auditing
audit: ensure that 'audit=1' actually enables audit for PID 1
dm raid: fix panic when attempting to force a raid to sync
md: free unused memory after bitmap resize
RDMA/cxgb4: Annotate r2 and stag as __be32
x86/intel_rdt: Fix potential deadlock during resctrl unmount
media: dvb-core: always call invoke_release() in fe_free()
dvb_frontend: don't use-after-free the frontend struct
Linux 4.14.7

       The following patches from the v4.14.7 stable release shall be applied:

net: thunderx: Fix TCP/UDP checksum offload for IPv6 pkts
net: thunderx: Fix TCP/UDP checksum offload for IPv4 pkts