ASoC: codecs: lpass-tx-macro: add dapm widgets and route

This patch adds dapm widgets and routes on this codec
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210211122735.5691-8-srinivas.kandagatla@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>