Merge Linux 4.4.273 kernel

Changes in 4.4.273: (36 commits)
        proc: Track /proc/$pid/attr/ opener mm_struct
        net/nfc/rawsock.c: fix a permission check bug
        ASoC: sti-sas: add missing MODULE_DEVICE_TABLE
        isdn: mISDN: netjet: Fix crash in nj_probe:
        bonding: init notify_work earlier to avoid uninitialized use
        netlink: disable IRQs for netlink_lock_table()
        net: mdiobus: get rid of a BUG_ON()
        net/qla3xxx: fix schedule while atomic in ql_sem_spinlock
        scsi: vmw_pvscsi: Set correct residual data length
        scsi: target: qla2xxx: Wait for stop_phase1 at WWN removal
        net: macb: ensure the device is available before accessing GEMGXL control registers
        net: appletalk: cops: Fix data race in cops_probe1
        MIPS: Fix kernel hang under FUNCTION_GRAPH_TRACER and PREEMPT_TRACER
        bnx2x: Fix missing error code in bnx2x_iov_init_one()
        powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers
        powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers
        i2c: mpc: Make use of i2c_recover_bus()
        i2c: mpc: implement erratum A-004447 workaround
        kvm: avoid speculation-based attacks from out-of-range memslot accesses
        btrfs: return value from btrfs_mark_extent_written() in case of error
        cgroup1: don't allow '\n' in renaming
        USB: f_ncm: ncm_bitrate (speed) is unsigned
        usb: dwc3: ep0: fix NULL pointer exception
        USB: serial: ftdi_sio: add NovaTech OrionMX product ID
        USB: serial: omninet: add device id for Zyxel Omni 56K Plus
        USB: serial: quatech2: fix control-request directions
        usb: gadget: eem: fix wrong eem header operation
        perf: Fix data race between pin_count increment/decrement
        NFS: Fix a potential NULL dereference in nfs_get_client()
        perf session: Correct buffer copying when peeking events
        kvm: fix previous commit for 32-bit builds
        NFSv4: nfs4_proc_set_acl needs to restore NFS_CAP_UIDGID_NOMAP on error.
        scsi: core: Only put parent device if host state differs from SHOST_CREATED
        ftrace: Do not blindly read the ip address in ftrace_bug()
        proc: only require mm_struct for writing
        Linux 4.4.273