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

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https://hg.mozilla.org/integration/gaia-central/rev/004f47e3409e
Author: Gabriele Svelto <gsvelto@mozilla.com>
Desc: Merge pull request #31092 from gabrielesvelto/bug-1176297-hangup-calls-via-power-button

Bug 1176297 - Hang up calls when pressing the power button. r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/27cba1e6aa67
Author: Gabriele Svelto <gsvelto@mozilla.com>
Desc: Bug 1176297 - Hang up calls when pressing the power button. r=etienne

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "0789ffa024d92d57dfaaf0133c9799442a999ae1", 
+        "git_revision": "87014859cb97cc8a75c614aadbf2b91d99908296", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "0c0e9d2dc00933951074ea1f05135356786b91d5", 
+    "revision": "004f47e3409e3464ceaf7150fa9ce6ae414a923c", 
     "repo_path": "integration/gaia-central"
 }