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

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https://hg.mozilla.org/integration/gaia-central/rev/d088194ed875
Author: Bob Silverberg <bob.silverberg@gmail.com>
Desc: Merge pull request #12751 from bobsilverberg/b2gstart

Bug 924918 - Extend the time we are waiting for b2g to start, to address problems running tests on devices, r=zac

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https://hg.mozilla.org/integration/gaia-central/rev/bd691d36a21d
Author: Bob Silverberg <bob.silverberg@gmail.com>
Desc: Bug 924918 - Extend the time we are waiting for b2g to start, to address problems running tests on devices, r=zac

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "916fa42b75d23393752647ef2b44da15e2e1dd52", 
+    "revision": "d088194ed875e7a0f5858183866bcd11f4862acd", 
     "repo_path": "/integration/gaia-central"
 }