Frameworks: Add "L" Drawables

Change-Id: I68fb7fb6b447bdd8a8bf17991287e76951342219

Conflicts:

	packages/SystemUI/res/drawable-hdpi/ic_sysbar_recent_land.png
	packages/SystemUI/res/drawable-mdpi/ic_sysbar_recent_land.png
	packages/SystemUI/res/drawable-xxhdpi/ic_sysbar_search.png