ASoc:msm: 8974: Add BE dai link for HDMI audio enablement

Add support for BE dai link for HDMI audio playback
enablement on 8974 target.
Add support for configuring additional required hdmi parameters
for 8974.

Change-Id: Ie200146df0d4bc84cea6d3e5821be52c41408cc4
Signed-off-by: Harmandeep Singh <hsingh@codeaurora.org>