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

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https://hg.mozilla.org/integration/gaia-central/rev/66a7fcc35eb2
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #20608 from crdlc/bug-1026257

Bug 1026257 - Would like to be able to set default number of columns in ...

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https://hg.mozilla.org/integration/gaia-central/rev/96dfc4fc9fc9
Author: crdlc <crdlc@tid.es>
Desc: Bug 1026257 - Would like to be able to set default number of colums in vertical homescreen at build time

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "ed24bb44a3c6e3d196c24e7c53fa5c5d62953069", 
+    "revision": "66a7fcc35eb2b1f5414fac27802626e601ce69fc", 
     "repo_path": "/integration/gaia-central"
 }