pulseaudio: disable GTK+ by default

PulseAudio's GTK+ support is limited to a test case and automatic icon name
population for applications.  This is too limited to enforce GTK+ 3 on all
builds, so disable it by default.

(From OE-Core rev: 619e63946fef32995363981aab288fc669e8ac04)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-multimedia/pulseaudio/pulseaudio.inc

@@ -35,7 +35,7 @@ EXTRA_OECONF = "\
 PACKAGECONFIG ??= "${@base_contains('DISTRO_FEATURES', 'bluetooth', 'bluez', '', d)} \
                    ${@base_contains('DISTRO_FEATURES', 'systemd', 'systemd', '', d)} \
                    ${@base_contains('DISTRO_FEATURES', 'zeroconf', 'avahi', '', d)} \
-                   ${@base_contains('DISTRO_FEATURES', 'x11', 'gtk x11', '', d)}"
+                   ${@base_contains('DISTRO_FEATURES', 'x11', 'x11', '', d)}"
 PACKAGECONFIG[bluez] = "--enable-bluez,--disable-bluez,bluez4 sbc"
 PACKAGECONFIG[gtk] = "--enable-gtk3,--disable-gtk3,gtk+3"
 PACKAGECONFIG[systemd] = "--enable-systemd,--disable-systemd,systemd"