Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/7915532817b0
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #32411 from gmarty/Bug-1196809-Pick-best-available-icon-for-pinned-sites-on-homescreen-hotfix

Bug 1196809 - Fix bad reference to id property. r=cwiis

========

https://hg.mozilla.org/integration/gaia-central/rev/c60be342ba45
Author: Guillaume Marty <edo999@gmail.com>
Desc: Bug 1196809 - Fix bad reference to id property

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "a9ee136440a7d57c3d47ef1587e72be8e9136074", 
+        "git_revision": "fde07d1ef53635f3e0d829d2d93b2c4b6b9fb689", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "e912fb2f3e7bb4952c199ac11c04bef13ec9bd64", 
+    "revision": "7915532817b0c32722008a6a349037ba56049ed6", 
     "repo_path": "integration/gaia-central"
 }