Updated the Intel ‘Cherry Trail’ UP Board to Kernel 4.8.2:

Fedora 25 (Workstation Edition)
Kernel 4.8.2-up on an x86_64 (ttyS0)
......
[root@rgup ~]# uname -a
Linux rgup 4.8.2-up #1 SMP Sat Oct 15 13:16:45 PDT 2016 x86_64 x86_64 x86_64 GNU/Linux
.........
[root@rgup ~]# ll /dev/snd
total 0
drwxr-xr-x 2 root root 60 Oct 15 13:23 by-path
crw-rw---- 1 root audio 116, 2 Oct 15 13:23 controlC0
crw-rw---- 1 root audio 116, 3 Oct 15 13:23 pcmC0D0p
crw-rw---- 1 root audio 116, 1 Oct 15 13:23 seq
crw-rw---- 1 root audio 116, 33 Oct 15 13:23 timer

I used the patched 4.8.0 source from here:  https://github.com/plbossart/sound/tree/byt-cht-hdmi-v4.8, and then applied the ‘incremental’ 4.8.0-4.8.1-4.8.2 patches, to bring it up to date..     The kernel code compiles correctly on ‘later’ gcc versions, now..

Robert Gadsdon.  October 16, 2016