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

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https://hg.mozilla.org/integration/gaia-central/rev/84564c9d6268
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Merge pull request #32332 from Cwiiis/bug1212864-new-homescreen-remove-pinch

Bug 1212864 - Remove homescreen pinch gesture. r=gasolin,gmarty

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https://hg.mozilla.org/integration/gaia-central/rev/e875915423ec
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Bug 1212864 - Remove homescreen pinch gesture. r=gasolin,gmarty

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "c24b1b32b64f97f2cbc62cea9c19efe0d9d78adf", 
+        "git_revision": "3590e6414dafb17dabe438322543561d8a4a141e", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "c40ae4fc32dfcaa1aea309a4fff363cc35ee2f22", 
+    "revision": "84564c9d6268f104f75991b278fa4bff2b45842d", 
     "repo_path": "integration/gaia-central"
 }