ASoC: rockchip: Init dapm routes dynamically

Currently we are using a fixed list of dapm routes.

Init dapm routes dynamically when parsing dailinks, since we are
supporting optional codecs.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>