OMAP4 : DSSCOMP : Avoid pushing content if no panel is active

Currently we push content on a blanked manager in case it is
default display. This causes a lot of logging in dsscomp call
back when we apply blank to manager.

Check added to see if any dss device is active and then only
push data to panel.

Change-Id: Idffd022e293949bfea260a01b96b8f6eff8327d3
Signed-off-by: Dandawate Saket <dsaket@ti.com>
Signed-off-by: Muralidhar Dixit <murali.dixit@ti.com>
OMAP4: OMAPFB: Dont error if display is already ON

Dont error if display state is already ON.

Change-Id: Ibad859847f2edd19cf6cd0d285461c66ed43c9a2
Signed-off-by: Dandawate Saket <dsaket@ti.com>
Signed-off-by: Muralidhar Dixit <murali.dixit@ti.com>
OMAPDSS: DSSCOMP:remove compilation warnings

SR requires there should be no compilation warnings

Change-Id: I47b38f7ed134bd0e8f063d2276c31d1946dfcda2
Signed-off-by: Eugen Mandrenko <ievgen.mandrenko@ti.com>