dss2: Fix for DSS manager IRQ mask ordering

Change-Id: I212b0a03421f93a24cf77421471f4a2ff29f64e8
Signed-off-by: Sunita Nadampalli <sunitan@ti.com>
Merge branch 'p-android-omap-3.4' of git://git.omapzoom.org/kernel/omap into p-android-omap-3.4