Merge Linux 4.4.248 kernel

Changes in 4.4.248: (39 commits)
        net/af_iucv: set correct sk_protocol for child sockets
        rose: Fix Null pointer dereference in rose_send_frame()
        usbnet: ipheth: fix connectivity with iOS 14
        bonding: wait for sysfs kobject destruction before freeing struct slave
        netfilter: bridge: reset skb->pkt_type after NF_INET_POST_ROUTING traversal
        net/x25: prevent a couple of overflows
        cxgb3: fix error return code in t3_sge_alloc_qset()
        net: pasemi: fix error return code in pasemi_mac_open()
        dt-bindings: net: correct interrupt flags in examples
        Input: xpad - support Ardwiino Controllers
        Input: i8042 - add ByteSpeed touchpad to noloop table
        powerpc: Stop exporting __clear_user which is now inlined.
        btrfs: sysfs: init devices outside of the chunk_mutex
        vlan: consolidate VLAN parsing code and limit max parsing depth
        usb: gadget: f_fs: Use local copy of descriptors for userspace copy
        USB: serial: kl5kusb105: fix memleak on open
        USB: serial: ch341: add new Product ID for CH341A
        USB: serial: ch341: sort device-id entries
        USB: serial: option: add Fibocom NL668 variants
        USB: serial: option: add support for Thales Cinterion EXS82
        tty: Fix ->pgrp locking in tiocspgrp()
        ALSA: hda/realtek - Add new codec supported for ALC897
        ALSA: hda/generic: Add option to enforce preferred_dacs pairs
        tty: Fix ->session locking
        cifs: fix potential use-after-free in cifs_echo_request()
        i2c: imx: Fix reset of I2SR_IAL flag
        i2c: imx: Check for I2SR_IAL after every byte
        arm64: assembler: make adr_l work in modules under KASLR
        iommu/amd: Set DTE[IntTabLen] to represent 512 IRTEs
        spi: Introduce device-managed SPI controller allocation
        spi: bcm2835: Fix use-after-free on unbind
        spi: bcm2835: Release the DMA channel if probe fails after dma_init
        tracing: Fix userstacktrace option for instances
        btrfs: cleanup cow block on error
        mm/userfaultfd: do not access vma->vm_mm after calling handle_userfault()
        gfs2: check for empty rgrp tree in gfs2_ri_update
        Input: i8042 - fix error return code in i8042_setup_aux()
        x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes
        Linux 4.4.248

Conflicts:
	arch/arm64/kernel/head.S
	include/linux/spi/spi.h