Merge 4.4.151 into kernel.lnx.4.4.r27-rel

Changes in 4.4.151: (23 commits)
        dccp: fix undefined behavior with 'cwnd' shift in ccid2_cwnd_restart()
        l2tp: use sk_dst_check() to avoid race on sk->sk_dst_cache
        llc: use refcount_inc_not_zero() for llc_sap_find()
        net_sched: Fix missing res info when create new tc_index filter
        vsock: split dwork to avoid reinitializations
        net_sched: fix NULL pointer dereference when delete tcindex filter
        ALSA: hda - Sleep for 10ms after entering D3 on Conexant codecs
        ALSA: hda - Turn CX8200 into D3 as well upon reboot
        ALSA: vx222: Fix invalid endian conversions
        ALSA: virmidi: Fix too long output trigger loop
        ALSA: cs5535audio: Fix invalid endian conversion
        ALSA: hda: Correct Asrock B85M-ITX power_save blacklist entry
        ALSA: memalloc: Don't exceed over the requested size
        ALSA: vxpocket: Fix invalid endian conversions
        USB: serial: sierra: fix potential deadlock at close
        USB: option: add support for DW5821e
        ACPI: save NVS memory for Lenovo G50-45
        ACPI / PM: save NVS memory for ASUS 1025C laptop
        serial: 8250_dw: always set baud rate in dw8250_set_termios
        x86/mm: Simplify p[g4um]d_page() macros
        Bluetooth: avoid killing an already killed socket
        isdn: Disable IIOCDBGVAR
        Linux 4.4.151

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>