Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/04f1b4a3d350
Author: Yoshi Huang <allstars.chh@mozilla.com>
Desc: Merge pull request #18631 from tauzen/Bug999569

Bug 999569 [NFC] Initialization test cases for NfcManager r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/895aaf9a05f6
Author: Krzysztof Mioduszewski <kmioduszewski@gmail.com>
Desc: Bug 999569 [NFC] Initialization test cases for NfcManager

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https://hg.mozilla.org/integration/gaia-central/rev/ebb0ddd21915
Author: Diego Marcos <diego.marcos@gmail.com>
Desc: Merge pull request #18725 from dmarcos/bug965486

Bug965486

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https://hg.mozilla.org/integration/gaia-central/rev/ddcf91ec5fd5
Author: Diego Marcos <diego.marcos@gmail.com>
Desc: Bug 965486 - [Camera] Build time configuration system

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "5f56d333d78c3942c451909b66706eda0e75976b", 
+    "revision": "04f1b4a3d35094181e7996a8ad2346d6d184b9db", 
     "repo_path": "/integration/gaia-central"
 }