Revert "Updated mcde drivers for WS2401 & source clean-up"

This reverts commit b3cf0ff1d7c822d336654b68ae9287def75c3617.
Revert "Reverted to SLUB memory allocator"

This reverts commit 3fac16fe9cea5e9c7071b75bb5ae3b0db3621a2d.