Adding optimized FIR function -based on yaniv's old code
Adding optimized FIR function
-based on yaniv's old code

TODO: make delay line dynamic + test correctness

Signed-off-by: Andreas Olofsson <b15c342f1de186996bcca5e1a23cd684d2fadb32@adapteva.com>

mateunho/pal,parallella/pal,Adamszk/pal3,RafaelRMA/pal,RafaelRMA/pal,eliteraspberries/pal,aolofsson/pal,debug-de-su-ka/pal,debug-de-su-ka/pal,twocs/pal,Adamszk/pal3,Adamszk/pal3,olajep/pal,olajep/pal,debug-de-su-ka/pal,debug-de-su-ka/pal,aolofsson/pal,8l/pal,parallella/pal,twocs/pal,parallella/pal,twocs/pal,8l/pal,8l/pal,parallella/pal,olajep/pal,eliteraspberries/pal,RafaelRMA/pal,olajep/pal,aolofsson/pal,debug-de-su-ka/pal,8l/pal,RafaelRMA/pal,mateunho/pal,mateunho/pal,Adamszk/pal3,parallella/pal,twocs/pal,aolofsson/pal,eliteraspberries/pal,eliteraspberries/pal,mateunho/pal,eliteraspberries/pal,mateunho/pal