beni: re-enable ldpi overlay

(cherry picked from commit b1199b4413fbdce1ae3bc3fe21d500eba7558398)

Change-Id: Iaada7f4ad54e769566829b49ebb1d96de50d42cc
beni: initial omniarmv6 support

Change-Id: Ic5af8ac2eb909d32c4e5a524edb3d5a46f37b8e2