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

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https://hg.mozilla.org/integration/gaia-central/rev/faf297657d6b
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #18408 from crh0716/997601

Bug 997601 - Save the caller id preferece across reboots r=jaoo

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https://hg.mozilla.org/integration/gaia-central/rev/32ca3b2c7b03
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 997601 - Save the caller id preferece across reboots
Bumping manifests a=b2g-bump