CRAS: init system settings before setting up devices.
CRAS: init system settings before setting up devices.

Alsa devices will want system settings to be initialized to get the
current volume when they are created.  This needs to happen before the
temporarily hard-coded devices are set up.

BUG=chromium-os:25413
TEST=build and run cras on lumpy64.

Change-Id: I3069e9f37da850db24e4ab9613d35a5ee312f38d
Signed-off-by: Dylan Reid <c791bfe44996c1eed9c7149a0c5f12a86d58eb85@chromium.org>

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