For i.MX6 SoloX, there is a mode of the SoC to shutdown all power source of
modules during system suspend and resume procedure. Thus, SSI needs to save
all the values of registers before the system suspend and restore them after
the system resume.
Acked-by: Wang Shengjiu <b02247@freescale.com>
Signed-off-by: Nicolin Chen <Guangyu.Chen@freescale.com>
(cherry picked from commit 34c50abd9df28580b367070bc20b8bca6cd7655c)