pulseaudio: Backport upstream fix new alsa compatibility.
Recent alsa upgrade stripped /usr/include/alsa directory from include
path reported by pkgconfig. Due to this pulseaudio 12.2 configure script
can find alsa's use-case.h header which in turn results in HAVE_ALSA_UCM
being undefined. This turn results in pa_alsa_ucm_device_update_available
symbol missing even though libalsa-util.so needs it. Once could argue
pulseaudio should not allow undefined symmbols in its shared modules.
Unfortunately it does and due to this current OE builds of pulseaudio
crash when the server tries to dlopen any module using libalsa-util.so.
Fix this by backporting ustream alsa header include fix.
Signed-off-by: Piotr Tworek <tworaz@tworaz.net> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
