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

========

https://hg.mozilla.org/integration/gaia-central/rev/94340fb19f68
Author: James Lal <james@lightsofapollo.com>
Desc: Merge pull request #12283 from lightsofapollo/reallyhide-keyboard-tests

per bug 917523 disable test on tbpl

========

https://hg.mozilla.org/integration/gaia-central/rev/d817d867b7ae
Author: James Lal <james@lightsofapollo.com>
Desc: per bug 917523 disable test on tbpl

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "99a07b8780aa9f52be7afeb0270873535fa83651", 
+    "revision": "94340fb19f685f3cd6e5fa990281557ba810a10e", 
     "repo_path": "/integration/gaia-central"
 }