Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/4cfc2a006af2
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #10542 from davidflanagan/bug884609

Bug 884609: auto-correct visual design font fixes r=RudyLu

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https://hg.mozilla.org/integration/gaia-central/rev/08d4a08cf4ce
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Bug 884609: auto-correct visual design font fixes

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "c5ef87d642c0d75529677af80d764f52287804e2", 
+    "revision": "4cfc2a006af27c84f48de4135af342e44e0e1103", 
     "repo_path": "/integration/gaia-central"
 }