[gnome-control-center] sound: Update gvc to not require ALSA support

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit ea83d2370680d369e336787154df9516a253f3de
Author: Bastien Nocera <hadess hadess net>
Date:   Fri Jan 26 10:53:37 2018 +0100

    sound: Update gvc to not require ALSA support
    
    ALSA support is only used in gnome-settings-daemon, so always disable
    the option, which wouldn't work on non-Linux anyway.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=792921

 meson.build     |    5 ++++-
 subprojects/gvc |    2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/meson.build b/meson.build
index b22a414..260d984 100644
--- a/meson.build
+++ b/meson.build
@@ -79,7 +79,10 @@ add_project_arguments(common_flags, language: 'c')
 # Check that we meet the dependencies
 libgvc = subproject(
   'gvc',
-  default_options: 'static=true'
+  default_options: [
+    'static=true',
+    'alsa=false',
+  ]
 )
 libgvc_dep = libgvc.get_variable('libgvc_dep')
 
diff --git a/subprojects/gvc b/subprojects/gvc
index 3093bdb..67533bf 160000
--- a/subprojects/gvc
+++ b/subprojects/gvc
@@ -1 +1 @@
-Subproject commit 3093bdb0777db1b1431bede19373ae5eac98accd
+Subproject commit 67533bffdcd22893b28baa411b2e75bd75dce323