msm: ais: use CDM to update wm image address

Use CDM to update wm image address instead of direct write.
and remove the buffer fifo which doesn't needed for CDM.
Use separated reg_val_pair for each RDI path to update wm,
otherwise, it will be overwritten to cause fps drop.

Change-Id: If86cc21ade3322572df4a3162f6fd33a91535611
Signed-off-by: Yunyun Cao <yunyunc@codeaurora.org>