ipu3: Backport to freescale commit

commit ad19aef4a80094221b1b826185aea924627e8642

ENGR00155140 ipuv3: add support of power suspend/resume

add support of power suspend/resume.
because IPU has issue of restore current buffer register,
this code only work for single buffer mode.

Signed-off-by: Jason Chen <b02280@freescale.com>
8 files changed