(CR) msm_fb: display: reduce turn-on display time.
    When turning on panel, increase its priority and restore it
    after panel has been turned on to reduce Turn-on display
    time when press power key.

    cherry pick commit:c43ca6a4 from main-jb-qc branch.

Change-Id: Ie0e8e55fc7498a6b2d43ad9e1995fa96c609c81e
Reviewed-on: http://gerrit.pcs.mot.com/500101
Tested-by: Jira Key <JIRAKEY@motorola.com>
Reviewed-by: Bang Nguyen <BNGUYEN1@motorola.com>
Reviewed-by: Jason Hrycay <jason.hrycay@motorola.com>

Conflicts:

	drivers/video/msm/mipi_dsi.c

Signed-off-by: Luis Cruz <ljc2491@gmail.com>