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

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https://hg.mozilla.org/integration/gaia-central/rev/9f22e70941c7
Author: Ian Liu <iliu@mozilla.com>
Desc: Merge pull request #10622 from ian-liu/sms/Bug881648_give_size_limitation_for_mms

Bug 881648 - [MMS] There is not maximum limit warning, r=@gnarf

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https://hg.mozilla.org/integration/gaia-central/rev/82f79f9da7c8
Author: ian-liu <iliu@mozilla.com>
Desc: Bug 881648 - [MMS] There is not maximum limit warning

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "fa046b32ea582ed17ccdcb2fd4339a6f443d215b", 
+    "revision": "9f22e70941c7a984478d3900dc56895d7718ac54", 
     "repo_path": "/integration/gaia-central"
 }