[gnome-builder] build: bump libsoup build requirement

[Christian Hergert <chergert src gnome org>]

commit 48f5b6b2f524889c87d3a396bcd5703440d1e6eb
Author: Christian Hergert <chergert redhat com>
Date:   Thu Feb 16 00:00:30 2017 -0800

    build: bump libsoup build requirement

 plugins/flatpak/configure.ac |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/plugins/flatpak/configure.ac b/plugins/flatpak/configure.ac
index a8574d8..41c8fa2 100644
--- a/plugins/flatpak/configure.ac
+++ b/plugins/flatpak/configure.ac
@@ -1,4 +1,5 @@
 m4_define([flatpak_required_version], [0.8.0])
+m4_define([soup_required_version], [2.52.0])
 m4_define([ggit_required_version], [0.25.0])
 
 # --enable-flatpak-plugin=yes/no/auto
@@ -15,7 +16,7 @@ AS_IF([test "$enable_flatpak_plugin" != no],[
                          [have_flatpak=yes],
                          [have_flatpak=no])
 
-       PKG_CHECK_MODULES(SOUP, [libsoup-2.4])
+       PKG_CHECK_MODULES(SOUP, [libsoup-2.4 >= soup_required_version])
 
 
        AS_IF([test "$enable_flatpak_plugin" = "yes" && test "$have_flatpak" = "no"],[