ANDROID: ASoC: core - add hostless DAI support

Allow DAI's to be hostless so that no PCM data is sent between DAI
and CPU. This allows for power savings as there is no DMA or CPU
interaction required.

BUG: 144369166
Change-Id: I8947f1ad2c4a7013e92e21078b35e3cad332cf6f
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Patrick Lai <plai@codeaurora.org>
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: Meng Wang <mwang@codeaurora.org>
Signed-off-by: Gopikrishnaiah Anandan <agopik@codeaurora.org>
Signed-off-by: Neema Shetty <nshetty@codeaurora.org>
Signed-off-by: Vidyakumar Athota <vathota@codeaurora.org>
Signed-off-by: Anish Kumar <kanish@codeaurora.org>
Signed-off-by: Shiv Maliyappanahalli <smaliyap@codeaurora.org>
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>