Notification Shade: add boost hints to onTouchEvent override

PS2: rebase/fix merge conflicts

-VanirAOSP

Change-Id: I5ab5d5a5cc351da5ea3e1dda0d1aba77913a6dd7

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java