Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/c0c606286668
Author: Greg Weng <snowmantw@gmail.com>
Desc: Revert (manually revert) "Bug 933035 - [B2G][System][Lockscreen] The
phone goes to sleep on the lockscreen even though screen timeout is set
to never", which seems caused the Bug 980559.

    This reverts commit d808643fb7fca3fe6ffd1e415c135fe2d482e7df.

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "0780b361e8e6c9768f59ee9a07bf96c855980a31", 
+    "revision": "c0c606286668e587b1e4074784fcc4f60428c927", 
     "repo_path": "/integration/gaia-central"
 }