pulseaudio: 8.0 -> 9.0

pulseaudio: 8.0 -> 9.0

Release notes:
https://www.freedesktop.org/wiki/Software/PulseAudio/Notes/9.0/

Rebased 0001-client-conf-Add-allow-autospawn-for-root.patch.

Removed 0001-Revert-module-switch-on-port-available-Route-to-pref.patch,
because the issues that were caused by the reverted commit have been
fixed.

The patch set that fixes the initial selection of HDMI profiles
(YOCTO#8448) is replaced with updated patches cherry-picked from
upstream.

Signed-off-by: Tanu Kaskinen <tanuk@iki.fi>
Signed-off-by: Ross Burton <ross.burton@intel.com>