MLK-15975-1: ASoC: fsl_ssi: support multi fifo script

With dual fifo enabled, the case recording mono sound
in the background, playback sound twice in parallal,
the second time playback sound may distort, the possible
reason is using dual fifo to playback mono sound is not
recommended.

This patch is to provide a option to use multi fifo script,
which can be dynamically configured as one fifo or two fifo
mode.

Vipul: while rebasing on v4.19, rename registers and fields macros
as per commit a818aa5f ("ASoC: fsl_ssi: Rename registers and fields
macros").

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
(cherry picked from commit 9d71068cf7d1fc1ec36e5fb34a321c1bdbaad324)
(cherry picked from commit e8964703c042c6317ed01ddab3cc9a1b67668e78)
(Vipul: Fixed merge conflicts)
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
Signed-off-by: Srikanth Krishnakar <Srikanth_Krishnakar@mentor.com>