[brasero] build: Allow building with tracker2

[Jeremy Bicha <jbicha src gnome org>]

commit 7cf9d3146d0782d1ff3a594f59d50f0cdd14688d
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Sat Jul 22 21:30:19 2017 -0400

    build: Allow building with tracker2

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index da45077..186e1a6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -388,7 +388,7 @@ AC_ARG_ENABLE(search,
 if test x"$enable_search" != "xno"; then
         # Try to figure out the tracker API version to use
         tracker_api="0.10"
-        m4_foreach([VERSION], [[0.10], [0.12], [0.14], [0.16], [0.18], [1.0]],
+        m4_foreach([VERSION], [[0.10], [0.12], [0.14], [0.16], [0.18], [1.0], [2.0]],
                               [PKG_CHECK_EXISTS([tracker-sparql-VERSION >= $TRACKER_REQUIRED],
                                                 [tracker_api="VERSION"])
                               ])