This is the one stuck to the substrate. It sports a prominent Freescale logo together with maskset ID of M54BS. I am not sure what 06 and S2 signifies here. The chip has three metal layers, and the process node is large enough for standard cells in the digital section to be readable.
Full-res map: https://infosecdj.net/map/skyworks/smm6037/infosecdj_mz_nikpa60x_a/
