Revert "hammerhead: readd DSP library"

This reverts commit 56bedddf958d2c74dc26034d5f9eb299693e5484.

Change-Id: If5cd355ed5ae33e855969b0ee50c622cecb80165
Added in custom toolchain.

Signed-off-by: CrackerTeg <crackerteg@gmail.com>